Theory:Timeline - Fifth Doctor

This page lists appearances of the Fifth Doctor in the order in which he experienced them. This timeline is based on observations of the Doctor Who universe and the events in each of these stories. From these observations we have attempted to build a concise timeline. It is assumed, much like their TV story counterparts, that each novel or audio series their published/numbered order is the order they occur in. There are also many gaps between stories.

The layout of this timeline is based in part on the observations on Doctor Who Reference Guide and Doctor Who - The Complete Adventures, Lance Parkin's AHistory and other sources that allow us to make observations, such as DocOhoReviews, Doc Oho's Book Reviews, The History of Doctor Who, The Discontinuity Guide, Clive Banks Databank, Whopix, the Big Finish forum, The Whoniverse and The Divergent Universe forum. None of these sources should be used solely as a source or considered a "true" timeline for stories.

Companions
Stories with Adric, Nyssa and Tegan travelling together must take place before TV: Earthshock, while any story with just Nyssa must be between TV: Time-Flight and TV: Arc of Infinity.

Any story with just Nyssa and Tegan must take place after Tegan's return in TV: Arc of Infinity and before TV: Mawdryn Undead. Any stories where they are accompanied by Marc must take place after AUDIO: Tartarus.

Any story where Tegan and Turlough are travelling with a young Nyssa of Traken must take place between TV: Mawdryn Undead and TV: Terminus. Whereas stories where they are travelling with an older Nyssa must take place after TV: Enlightenment and between AUDIO: Cobwebs and AUDIO: The Entropy Plague.

Any story with just Tegan and Turlough must take place between TV: Terminus and TV: Resurrection of the Daleks. Any story with just Turlough must take place between TV: Resurrection of the Daleks and before TV: Planet of Fire. Any story where they are accompanied by Kamelion must take place between TV: The King's Demons and TV: Planet of Fire.

Stories with Peri Brown must occur after TV: Planet of Fire, while any story where Erimem accompanies them must take place between AUDIO: The Eye of the Scorpion and AUDIO: The Bride of Peladon.

Any story where the Doctor is travelling alone can be placed between AUDIO: The Waters of Amsterdam and AUDIO: The Elite, between AUDIO: And You Will Obey Me and PROSE: The King of Terror, and between AUDIO: Conversion and AUDIO: Madquake.

Costume
The Fifth Doctor wore two distinct costumes, with the first debuting with him in TV: Castrovalva until it was replaced with the second in TV: The Awakening.

Sonic screwdriver
After his sonic screwdriver was destroyed in TV: The Visitation, the Doctor elects not to replace it, setting any story where it utilizes the device as happening before The Visitation.

A new body

 * TV: Logopolis
 * The Doctor regenerates from his previous incarnation.


 * TV: Castrovalva
 * Set immediately after Logopolis, with the Doctor's regeneration still settling.


 * PROSE: The Comet's Tail
 * Set during Castrovalva: Part 1, when the Doctor is resting in the Zero Room before the Master interferes with the TARDIS navigational systems.

Early adventures

 * AUDIO: Psychodrome
 * Set two days after Logopolis, and shortly after Castrovalva. The Doctor promises to get Tegan back to Heathrow.


 * PROSE: Cold Fusion
 * Set three days after Logopolis. The Doctor is still recovering from his recent regeneration.


 * PROSE: Dr. Fifth
 * The Doctor is still in need of the Zero Room, implying he is still recovering from his recent regeneration, and still has his sonic screwdriver, setting this before The Visitation.


 * COMIC: On the Planet Isopterus
 * Tegan is not concerned using the Doctor's dream-manipulating machine, setting this before Kinda.


 * PROSE: The Immortals
 * The Doctor has recently regenerated, and Tegan is still upset about his failure to return her to Heathrow, setting this before Divided Loyalties.


 * PROSE: First Born
 * The Doctor still has his sonic screwdriver, setting this before The Visitation.


 * PROSE: Resonance
 * The Doctor appears to be travelling alone, but still has his sonic screwdriver, setting this before The Visitation.


 * AUDIO: The Ingenious Gentleman Adric of Alzarius
 * The Doctor still has his sonic screwdriver, setting this before The Visitation.

Attempts to return to Heathrow

 * TV: Four to Doomsday
 * The Doctor begins trying to get the TARDIS to Heathrow Airport to return Tegan to her job as an air hostess. Nyssa collapses after a showdown with Monarch.


 * TV: Kinda
 * Following directly on from Four to Doomsday, Nyssa recuperates in the TARDIS throughout the crew's stay on Deva Loka. The Doctor meets the Mara for the first time and it possesses Tegan until driven out.


 * AUDIO: Sock Pig
 * Authorial intent places this between Kinda and The Visitation. The Doctor is out for a night stroll on his own, and he still has his sonic screwdriver, setting this before The Visitation.


 * TV: The Visitation
 * Set almost immediately after Kinda, with the Doctor reprimanding Adric for his actions, and Tegan still haunted by her possession. The Doctor's sonic screwdriver is destroyed by the Terileptil leader, and the Doctor's defeat of them accidentally starts the Great Fire of London


 * PROSE: Divided Loyalties
 * The TARDIS has just escaped the Great Fire of London, setting this immediately after The Visitation. The Doctor avoids landing the TARDIS on a planet because he believes it would lead to another adventure, and instead allows the TARDIS to float in space. Tegan decides that she wants to remain with the TARDIS crew, and suggests that they take a holiday.


 * AUDIO: The Toy
 * Nyssa refers to the events of Kinda and is unsure if the Master is still alive, setting this before Smoke and Mirrors.


 * AUDIO: The Star Men
 * The Doctor is still trying to get to Heathrow Airport.


 * AUDIO: The Contingency Club
 * The Doctor is still trying to get to Heathrow Airport, and Tegan is doubtful he will land there anytime soon. Nyssa begins to suspect that Tegan doesn't want to leave. The Doctor has recently lost his sonic screwdriver, setting this shortly after The Visitation.


 * AUDIO: Zaltys
 * After her plan to trick Adric into piloting the TARDIS fails, Tegan gives up on the TARDIS's ability to get her back to Heathrow, and she and Adric believe the Master is dead, setting this before Smoke and Mirrors.


 * AUDIO: Smoke and Mirrors
 * The Doctor has recently lost his sonic screwdriver, setting this shortly after The Visitation. Harry Houdini is the first historical figure that Tegan has met since beginning her travels with the Doctor, and this is the Doctor's first encounter with the Master since Castrovalva. Nyssa believes Tegan is beginning to enjoy her travels, something Tegan implies is correct.


 * AUDIO: Kingdom of Lies
 * Tegan, after some hesitation, admits to Adric that she has begun to enjoy travelling in the TARDIS. She recalls her brief piloting of the TARDIS from Four to Doomsday.


 * AUDIO: Ghost Walk
 * The Doctor tries to get to Heathrow Airport, but Tegan has lost interest. Nyssa's psychic potential from Kinda is reference.

Final adventures with Adric

 * TV: Black Orchid
 * Nyssa refers to the events of The Visitation as having "just happened", and Tegan reminds the Doctor of her newfound willingness to stay aboard the TARDIS for a while, setting this soon after Divided Loyalties.


 * COMIC: Time & Time Again
 * Set during Black Orchid: Part 1.


 * AUDIO: Serpent in the Silver Mask
 * Set sometime after The Visitation, with the Doctor looking for components to build a new sonic screwdriver.


 * COMIC: In Their Nature
 * Adric, Nyssa and Tegan are kidnapped Adam Mitchell, leading directly into Endgame.


 * COMIC: Endgame
 * The Doctor joins with his other incarnations to rescue his friends from Adam and, and assists the other Doctors in saving their companions as well.


 * COMIC: The Last Action Figure


 * PROSE: The Key of Vaga
 * No explanations are given about the absence of Nyssa and Tegan.


 * PROSE: Planet of Fear
 * No explanations are given about the absence of Nyssa and Tegan.


 * WC: Doctors Assemble!
 * Though they do not appear, the Doctor is currently travelling with Adric and Tegan.


 * PROSE: In the TARDIS: Christmas Day


 * PROSE: The Constant Doctor


 * AUDIO: The Darkening Eye
 * The Dar Traders predict that Adric's death is coming soon, setting this shortly before Earthshock.


 * PROSE: The Boy Wonder
 * Adric feels unappreciated in the TARDIS, setting this shortly before Earthshock.


 * PROSE: Hearts of Stone
 * Adric feels unappreciated in the TARDIS and is resentful towards Nyssa and Tegan's friendship. Adric's upcoming death is foreshadowed, setting this shortly before Earthshock.


 * AUDIO: Iterations of I
 * The Doctor has "finally gotten around to" reading the Black Orchid book suggesting that some time has passed since Black Orchid. Adric believes that none of the TARDIS crew take him seriously, setting this shortly before Earthshock.


 * TV: Earthshock
 * While stopping the Cybermen from destroying the Earth, Adric dies in a spaceship explosion that triggers the extinction of the dinosaurs.


 * TV: Time-Flight
 * Set immediately after Earthshock, with the TARDIS crew grieving for Adric, and Tegan failing to convince the Doctor to change history and save him. While trying to go to the Great Exhibition, the TARDIS lands at Heathrow Airport, where, after a battle with the Master, Tegan is left behind by the Doctor and Nyssa, due to both of them believing that Tegan wanted to remain on Earth.

Lone travels with Nyssa

 * PROSE: Suspension and Disbelief
 * The Doctor is still mourning Adric's death, setting this shortly after Earthshock.


 * PROSE: Empire of Death
 * Set shortly after Time-Flight. Nyssa still has her latent psychic powers and has often thought about asking the Doctor to take her to Traken at an earlier point in its history, setting this before Primeval.


 * PROSE: Tip of the Tongue
 * The Doctor has recently lost Adric and Tegan, setting this shortly after Time-Flight.


 * PROSE: Lonely Days
 * Nyssa recalls Tegan recently returning to Heathrow Airport after Adric's death, setting this shortly after Time-Flight.


 * PROSE: Past Reckoning
 * Nyssa knows very little of the history of Earth, and suggests they look up Tegan once they're back on Earth.


 * PROSE: The Parliament of Rats
 * Nyssa refers to the Doctor's recent regeneration.


 * PROSE: The Eternity Contract


 * AUDIO: The Land of the Dead
 * Tegan has recently departed the TARDIS, setting this shortly after Time-Flight.


 * AUDIO: Winter for the Adept
 * Nyssa mentions the recent events from The Land of the Dead.


 * AUDIO: The Mutant Phase
 * The recent events of The Land of the Dead have prompted Nyssa to fix the TARDIS proximity alarm. Nyssa encounters Daleks for the first time.


 * AUDIO: Primeval
 * Several weeks have passed since Kinda. Nyssa has recently shown psychic sensitivity, setting this shortly after Time-Flight.


 * AUDIO: Circular Time: Spring


 * AUDIO: Spare Parts
 * The Doctor and Nyssa haven’t stopped to mourn Adric since Earthshock.


 * AUDIO: Creatures of Beauty
 * Nyssa mentions visiting Alaska, as she did in The Land of the Dead.


 * PROSE: Long Term
 * The Doctor is travelling with Nyssa, though she waits in the TARDIS for the duration of this adventure. The Doctor chooses not to share the fate of several teenage boys with Nyssa, as she is still mourning the death of Adric, setting this shortly after Earthshock


 * AUDIO: Circular Time: Summer


 * PROSE: Confabula
 * Nyssa recalls the events of Spare Parts.


 * PROSE: Not So Much a Programme, More a Way of Life
 * Nyssa recalls visiting Heathrow Airport, and deeply misses Tegan, setting this a while after Time-Flight.


 * PROSE: Artificial Intelligence
 * The Doctor recalls his visit to the school in Long Term as occurring "not long ago". He is also still bitter about Adric's untimely death.


 * AUDIO: The Game


 * PROSE: The 57th
 * Having found things difficult recently, Nyssa attempts to propose that she and the Doctor separate for a while, though the Doctor convinces her that they should take a holiday instead.


 * PROSE: The Church of Saint Sebastian


 * PROSE: Saturn
 * The Doctor and Nyssa relax on Saturn, with Nyssa relieved that they're finally taking a break. Nyssa becomes upset by the Doctor's lack of empathy for the Saturnites.

The Stockbridge ordeal

 * The Doctor temporarily parts with Nyssa so she can undertake a solo expedition to 13th century Rhodes. (AUDIO: Renaissance of the Daleks)


 * COMIC: The Tides of Time
 * The Doctor is playing cricket in 1980s Stockbridge when he meets Sir Justin of Wells. He also encounters Shayde for the first time.


 * COMIC: Stars Fell on Stockbridge
 * Set shortly after The Tides of Time. Still in Stockbridge, the Doctor meets Maxwell Edison for the first time and takes him on a trip in the TARDIS.


 * PROSE: Catalogue of Events
 * The Doctor is depicted in his first outfit.


 * COMIC: The Stockbridge Horror
 * The Doctor learns that he accidentally brought an elemental back to Stockbridge during the events of Stars Fell on Stockbridge. He is put on trial by the Time Lords, but ultimately released.


 * COMIC: Lunar Lagoon
 * The Doctor is recuperating on an island in the South Pacific following his trial on Gallifrey during The Stockbridge Horror. He meets a Japanese soldier named Fuji, who is soon killed by Gus Goodman.


 * COMIC: 4-Dimensional Vistas
 * Set immediately after Lunar Lagoon, with Gus joining the Doctor on his travels. The Doctor has not learnt how to swim, setting this before Warriors of the Deep.


 * COMIC: The Moderator
 * Gus is killed by the the Moderator, who was aiming for the Doctor on the orders of Josiah W. Dogbolter.

Resumed travels with Nyssa

 * AUDIO: Renaissance of the Daleks
 * The Doctor is tracked to the Savoy Hotel by General Tillington, and is reunited with Nyssa. After they defeat the Daleks, they resume their travels together.


 * AUDIO: Return to the Web Planet


 * PROSE: God Send Me Well to Keep


 * PROSE: Tweaker


 * PROSE: Curiosity


 * AUDIO: Circular Time: Autumn
 * The Doctor and Nyssa spend three weeks in Stockbridge. The Doctor has regularly played cricket in Stockbridge as a pastime, setting this after The Tides of Time.

Troubles with Thomas Brewster

 * AUDIO: The Haunting of Thomas Brewster
 * The Doctor is separated from Nyssa by a time breach and spends twelve months in London searching for her, while only a few hours pass from her perspective. Thomas Brewster steals the TARDIS, leaving the Doctor and Nyssa stranded in 1867 London.


 * AUDIO: The Boy That Time Forgot
 * Five months have passed since the Doctor and Nyssa became stranded on Earth in The Haunting of Thomas Brewster. Brewster is guided back to the Doctor and Nyssa by a mysterious voice in the TARDIS, and they allow Brewster to travel with them.


 * AUDIO: Time Reef
 * Set shortly after The Boy That Time Forgot, with the Doctor and Nyssa recovering the parts of the TARDIS that Brewster sold.


 * AUDIO: A Perfect World
 * Brewster leaves the Doctor and Nyssa's company, staying in 2008 London.

Further travels with Nyssa

 * AUDIO: Castle of Fear
 * The Doctor mentions Sir Justin of Wells from The Tides of Time.


 * AUDIO: The Eternal Summer
 * Follows directly on from Castle of Fear.


 * AUDIO: Plague of the Daleks
 * Follows directly on from The Eternal Summer.


 * AUDIO: The Deep


 * AUDIO: The Demons of Red Lodge


 * AUDIO: The Entropy Composition
 * Nyssa is still thinking about her happy childhood on Traken, as she was The Demons of Red Lodge.


 * AUDIO: Doing Time


 * AUDIO: Special Features
 * The Doctor refers to the events of The Demons of Red Lodge.


 * AUDIO: Seven to One


 * AUDIO: My Brother's Keeper
 * Nyssa mentions the prisons of Folly from Doing Time.


 * AUDIO: The Interplanetarian


 * AUDIO: Smuggling Tales


 * AUDIO: 1001 Nights
 * Nyssa recounts the events of My Brother's Keeper, The Interplanetarian, and Smuggling Tales.


 * AUDIO: 1963: Fanfare for the Common Men


 * AUDIO: The Light at the End

Brief travels with Hannah

 * AUDIO: Moonflesh
 * After the TARDIS door is left open due to a malfunctioning latch, Hannah Bartholemew stows aboard the TARDIS as it takes off.


 * AUDIO: Tomb Ship
 * The Doctor finds out about Hannah stowing aboard the TARDIS, setting this immediately after Moonflesh.


 * AUDIO: Masquerade
 * On the SORDIDE Delta space station, Hannah is left in a robot-like state after being purged of all emotions. She decides to stay on the station instead of going with the Doctor.

Continued travels with Nyssa

 * GAME: The First Adventure
 * The Doctor is in his first outfit, and traveling with an unidentified companion, presumably Nyssa.


 * AUDIO: Alien Heart
 * The Doctor and Nyssa are captured by the Daleks, and transported to Mojax, where numerous duplicates of them are created, leading directly into Dalek Soul.


 * AUDIO: Dalek Soul
 * It has been five years since the Daleks captured the Doctor and Nyssa on Traxana.


 * AUDIO: The Second Oldest Question


 * AUDIO: Downward Spiral
 * Nyssa says that she lost her father "a long time ago," setting this late into her travels with the Doctor.

The return of Omega

 * TV: Arc of Infinity
 * During a scuffle with Omega in Amsterdam, the Doctor and Nyssa are reunited with Tegan, who rejoins them in the TARDIS.


 * TV: The Name of the Doctor
 * Set during Arc of Infinity: Part 3, when the Doctor is floating in the Matrix.


 * AUDIO: The Waters of Amsterdam
 * Set between Arc of Infinity and Omega.


 * AUDIO: Omega
 * On behalf of the Time Lords, the Doctor is clearing up after the events of Arc of Infinity.

Travelling alone

 * AUDIO: The Burning Prince
 * While the Doctor is initially attempting to return to Amsterdam to pick up Nyssa and Tegan, he instead considers making the journey back to 1983 more of a "round trip".


 * COMIC: The Test of Time


 * PROSE: A Victorian Interlude
 * The Doctor is depicted in his first outfit.


 * PROSE: The Feast of Seven... Eight (and Nine)
 * The events of The Visitation are mentioned.


 * PROSE: There's Something About Mary


 * PROSE: The Man on the Phone


 * GAME: Destiny of the Doctors
 * The Doctor is in his first outfit.


 * AUDIO: Cuddlesome
 * The Doctor is depicted in his first outfit, and recalls the events of The Visitation.


 * PROSE: The Lost Diaries of Winston Spencer Churchill
 * The Doctor is depicted in his first outfit.


 * AUDIO: The Secret History
 * The Doctor is depicted in his first outfit. The Doctor hasn't seen Steven since The Savages, setting this before The Five Companions.


 * AUDIO: Fallen Angels
 * The Doctor recalls visiting Heathrow Airport in 1981, setting this after Time-Flight.


 * AUDIO: Empire of the Racnoss
 * The Doctor is depicted in his first outfit. After an encounter with the Racnoss, the Doctor decides to return a Time Lord combatant, Alayna, to Gallifrey.

Traveling with Brooke and River

 * The Doctor is joined by Brooke, who is an assassin sent after him by Madame Kovarian. (AUDIO: The Furies) The Doctor has numerous adventures with Brooke without finding out. (AUDIO: A Requiem for the Doctor)


 * AUDIO: The Lady in the Lake
 * The Doctor and Brooke are joined by River Song in their travels.


 * AUDIO: A Requiem for the Doctor
 * The Doctor reacts with curiosity when he hears River use the phrase "timey-wimey", suggesting this is set before Time Crash.


 * AUDIO: My Dinner with Andrew
 * The Doctor has his memory of Brooke and River erased by River's hallucinogenic lipstick. He is shot with regeneration inhibitors by Brooke and dies.


 * AUDIO: The Furies
 * Brooke II uses River's vortex manipulator to prevent her past incarnation from killing the Doctor by tricking her into killing Andrew Edwardson in his place, saving the Doctor. River mentions that the Doctor is on his way back to Amsterdam, and he agrees to drop O off at a galactic trading centre on his way.

Returning to Amsterdam

 * TV: Time Crash
 * The Doctor is in his first outfit, and has no sonic screwdriver, setting this after The Visitation. He has started using the phrase "wibbly wobbly, timey wimey", setting this after Fallen Angels as well.


 * AUDIO: Relative Time
 * The Doctor is still trying to return to Amsterdam. He does not react to Jenny's use of the phrase "timey-wimey".


 * AUDIO: Collision Course
 * The Doctor recalls his trip to Heathrow, setting this after Time-Flight.

Renewed voyages with Tegan

 * AUDIO: The Waters of Amsterdam: Epilogue
 * The Doctor returns to Amsterdam thirty seconds after he left to collect Nyssa and Tegan, saying that he had to run a "quick errand" for the Time Lords, as depicted in Omega.


 * AUDIO: The Elite
 * The Doctor, Tegan and Nyssa have just left Amsterdam, setting this immediately after The Waters of Amsterdam. Tegan asks the Doctor to take her to Brisbane to recover from their adventure on Florana, leading directly into Hexagora.


 * AUDIO: Hexagora
 * The Doctor, Tegan and Nyssa holiday in Brisbane for several days to recover from the events of The Elite.


 * PROSE: Fear of the Dark
 * Tegan is having dreams of snakes, setting this before Snakedance. The Doctor is checking if the Time Lords installed a tracking device on his TARDIS during Arc of Infinity.


 * AUDIO: The Children of Seth
 * References are made to the recent events of The Elite and Hexagora.


 * PROSE: Danger Down Below
 * PROSE: The God Machine
 * PROSE: The Armageddon Chrysalis
 * PROSE: The Haven
 * PROSE: The Penalty
 * PROSE: Night Flight to Nowhere
 * Tegan returns to Heathrow Airport to meet a friend, suggesting that she has been back with the Doctor for a while. In fact, all the Doctor Who Annual 1983 stories features the Doctor traveling with Nyssa and Tegan without Adric, but with Tegan still dressed as an air stewardess. Presumably, as hinted in The Elite, she is wearing her old suit due to her inability to find other clothes.


 * PROSE: Wake
 * The TARDIS crew go to the Necropolitan to visit a memorial to Adric.


 * PROSE: Lackaday Express
 * The Doctor and Tegan are having an old argument about Adric's death and the Doctor's refusal to go back in time and save him.


 * PROSE: The Sands of Time
 * Tegan mentions being in Amsterdam, and is still wearing the same clothes from when she was there, setting this after Arc of Infinity. Preventing Adric's death is still being discussed by Tegan and the Doctor.


 * PROSE: Zeta Major
 * Set between Arc of Infinity and Snakedance, according to the book's back cover. Both Nyssa and Tegan are still thinking about Adric's death.


 * PROSE: Soul Mate
 * Tegan is skeptical that a dream could manifest itself physically, setting this before Snakedance.


 * PROSE: No Exit


 * PROSE: Goths and Robbers
 * The writer's notes place this between Arc of Infinity and Snakedance.


 * AUDIO: The Lions of Trafalgar


 * AUDIO: The King of the Dead


 * AUDIO: The Mistpuddle Murders

Discovering dinosaurs

 * PROSE: Great Snakes
 * The Doctor, Tegan, and Nyssa are in good spirits, setting this after Tegan's recent return in Arc of Infinity.


 * PROSE: Crocs!
 * Set immediately after Great Snakes!.


 * PROSE: 'Gators
 * Set on the same day as Great Snakes! and Crocs!.


 * PROSE: Caimans and Gavials
 * Set immediately after Gators.


 * PROSE: Woolly Mammoth


 * PROSE: Elephant Hunt
 * Set immediately after Woolly Mammoth.


 * PROSE: Face to Face with Early Man


 * PROSE: On Safari


 * PROSE: Elephant Dance
 * Set immediately after On Safari.


 * PROSE: Sabre-toothed Tiger
 * Set immediately after Elephant Dance.


 * PROSE: Horses Through the Ages


 * PROSE: The Loch Ness Monster


 * PROSE: Amazing Fossil Fish
 * Set immediately after The Loch Ness Monster.

Marc joins the crew

 * AUDIO: Tartarus
 * Tegan and Nyssa can't remember the last time that the Doctor mentioned Adric, with Nyssa concluding that he is struggling to come to terms with his death. Marc joins the Doctor, Tegan and Nyssa after being freed from slavery by Cicero.


 * AUDIO: Interstitial
 * Marc has only just joined the TARDIS crew, seeing outer space and sliding doors for the first time, setting this shortly after Tartarus.


 * AUDIO: Feast of Fear


 * AUDIO: Warzone
 * Marc is partially cyber-converted by the Cybermen, and the Doctor vows not to allow them to take another friend from him after Adric, leading directly into Conversion.


 * AUDIO: Conversion
 * The Doctor manages to save Marc's mind from cyber-conversion. He drops Tegan, Nyssa and Marc off on Callanna to recover from recent events. He decides that he should take a break from his companions for a while, so that he can have a chance to think.

Time apart from companions

 * The Doctor visits Cicero to ensure that he doesn't include their adventure together in his letters. The Doctor alludes to something bad happening to Marc, presumably his near cyber-conversion. (AUDIO: Tartarus)


 * AUDIO: Ghost Station


 * AUDIO: The Bridge Master


 * AUDIO: What Lurks Down Under


 * AUDIO: The Dancing Plague


 * AUDIO: Thin Time
 * After an encounter with the Eleventh Doctor, the Fifth Doctor decides to return to Tegan, Nyssa and Marc, leading directly into Madquake.

Traveling with companions again

 * AUDIO: Madquake
 * The Doctor reunites with Tegan, Nyssa and Marc on Callanna. Tegan and Nyssa recall the events of Kinda, but they don't mention the events of Snakedance, indicating that it hasn't happened yet.


 * Marc would eventually stop travelling in the TARDIS, though under unknown circumstances.

Learning magic tricks

 * PROSE: Nyssa's Venusian Holiday Snap
 * PROSE: Hard Cheese
 * PROSE: The Dog, the Mouse, and the Cheese
 * PROSE: The Missing Daleks
 * PROSE: Paper Magic
 * PROSE: Wizard, Warlock or Sorcerer
 * PROSE: Nysssa 'n Easy Sums
 * PROSE: Think of a Number!
 * PROSE: A-mazing Rope Trick
 * PROSE: Vanishing Knot Trick
 * PROSE: Tegan's Handcuffs
 * PROSE: Palming a Coin
 * PROSE: Triangle-turning Trick
 * PROSE: The Great Houdini
 * PROSE: And Now for a Little Black Magic...

Old foes return again

 * PROSE: Men of the Earth
 * The Doctor allows Tegan to read out the coordinates for their next destination, leading directly into Snakedance.


 * TV: Snakedance
 * After reading out the coordinates for their next destination while under the influence of the Mara, Tegan causes the TARDIS to land on the planet Manussa, where the Doctor manages to purge the Mara from her mind again.


 * COMIC: Blood Invocation
 * Cliffhanger ending leads directly into Goth Opera.


 * PROSE: Goth Opera
 * Tegan is still recovering from her possession by the Mara, setting this immediately after Snakedance. The Doctor has not seen the Master since Time-Flight.


 * TV: The Day of the Doctor
 * Despite wearing his second outfit, the Doctor is currently travelling with Nyssa and Tegan. (DWM 475) He helps in the saving of Gallifrey on the last day of the Last Great Time War, and, in the novelisation, has a tea party with his other incarnations in the Under Gallery as a celebration.


 * AUDIO: Aquitaine


 * AUDIO: The Peterloo Massacre
 * Tegan and Nyssa visit Manchester, setting this after their very first visit to Manchester in Goth Opera.


 * TV: Mawdryn Undead
 * Tegan is still worried about the Mara returning, setting this shortly after Snakedance. Under orders from the Black Guardian, Turlough joins the Doctor in his travels so he may kill him for the Black Guardian.


 * AUDIO: Gardens of the Dead
 * Turlough has only just joined the TARDIS crew, setting this immediately after Mawdryn Undead.


 * COMIC: Ophiuchus


 * TV: Terminus
 * Turlough is shown his bedroom in the TARDIS, and is greatly disliked and distrusted by Tegan, setting this shortly after Mawdryn Undead. Nyssa decides to stay on Terminus to help treat the Lazar victims.


 * PROSE: Gudok
 * Tegan still doesn't trust Turlough, even believing him capable of murder.


 * TV: Enlightenment
 * Turlough, with the Doctor's encouragement, defies the Black Guardian and is able to escape his agreement with him. Turlough decides that he wants to go home to Trion.


 * AUDIO: Freakshow
 * Set just after Enlightenment.


 * PROSE: Falling from Xi'an
 * Turlough has an underlying fear that the Black Guardian will punish him for siding with the Doctor, though his relationship with Tegan appears to be amicable.

Reunited with Nyssa

 * AUDIO: Cobwebs
 * Set two days after Terminus. The Doctor, Tegan and Turlough reunite with Nyssa, roughly fifty years later from her perspective, and she rejoins the TARDIS crew, on the condition that they take her home, though she knows it might take some time.


 * AUDIO: The Whispering Forest
 * Ending leads directly into The Cradle of the Snake.


 * AUDIO: The Cradle of the Snake


 * AUDIO: Heroes of Sontar
 * Tegan mentions the Mara being purged from her system, setting this shortly after The Cradle of the Snake.


 * AUDIO: Kiss of Death


 * AUDIO: Rat Trap


 * AUDIO: The Emerald Tiger
 * Nyssa's appearance is reverted to that of her younger self at the time that she left the TARDIS crew.


 * AUDIO: The Jupiter Conjunction
 * Set immediately after The Emerald Tiger, with Nyssa adjusting to her rejuvenated appearance.


 * AUDIO: The Monkey House
 * Authorial intent places this between The Jupiter Conjunction and The Butcher of Brisbane.


 * AUDIO: The Butcher of Brisbane


 * AUDIO: Eldrad Must Die!


 * AUDIO: The Lady of Mercia
 * Turlough refers to Dr. Sa Yy Findecker from The Butcher of Brisbane.


 * AUDIO: Prisoners of Fate
 * Ending leads directly into Mistfall.

Trapped in E-Space

 * AUDIO: Mistfall
 * Drawn off-course, the TARDIS passes through a CVE into E-Space, trapping the Doctor and his companions there. Ending leads directly into Equilibirum.


 * AUDIO: Equilibrium
 * Tegan is kidnapped by space pirates, leading directly into The Entropy Plague.


 * AUDIO: The Entropy Plague
 * Nyssa stays behind in E-Space to power a portal back to N-Space for the TARDIS.

Joined by Kamelion

 * TV: The King's Demons
 * Tegan wonders if the TARDIS has fallen into a trap set by the Black Guardian. The Doctor takes Kamelion with him in the TARDIS after liberating him from, and sets the TARDIS coordinates for the Eye of Orion.


 * PROSE: The Bird of Fire
 * The Doctor is trying to reach the Eye of Orion, setting this shortly after The King's Demons.


 * PROSE: Mark of the Medusa
 * Tegan is still susceptible to the control of the Mara. Though he stays aboard, Kamelion is keen to leave the TARDIS with his fellow crew-members, but ends up being controlled by the Mara from Tegan's subconscious.


 * PROSE: The Crystal Bucephalus
 * Set a few days after The King's Demons. The TARDIS is heavily damaged, and Kamelion is influenced by a strong mind and endangers his fellow travellers. He decides that he cannot be trusted and elects to remain within the TARDIS indefinitely.


 * AUDIO: Devil in the Mist
 * Kamelion has only recently joined the TARDIS crew, and Tegan does not yet trust him. The Doctor and Kamelion make repairs on the TARDIS console, including a refitting, setting this shortly before The Five Doctors. Kamelion does not fear leaving the TARDIS.


 * AUDIO: Black Thursday
 * The Doctor has recovered from the back injury he received in Devil in the Mist. Kamelion begins to believe that he is a liability and should no longer travel with the Doctor. The TARDIS team decide to take a trip to New York, leading into Power Game.


 * AUDIO: Power Game
 * Rather than New York, the TARDIS instead arrives in York. The Doctor, Tegan and Turlough spend three weeks searching for Kamelion after he goes missing. Kamelion receives a signal from his home planet.


 * AUDIO: The Kamelion Empire
 * Set immediately after Power Game. The TARDIS follows the signal to Kamelion's homeworld of Mekalion. The TARDIS console is destroyed, and Kamelion decides that he cannot be trusted and elects to remain within the TARDIS until his mental resistance is stronger. The TARDIS materialises on the Eye of Orion, leading directly into The Five Doctors.

Reminders of the past

 * TV: The Five Doctors
 * The Doctor brings Tegan and Turlough to the Eye of Orion, as he had promised to do at the conclusion of The King's Demons. The TARDIS has a brand new console.


 * AUDIO: The Five Companions
 * Set during The Five Doctors, after the Doctor uses the Master's transmat recall device to escape the Cybermen.


 * PROSE: The Eight Doctors
 * Set immediately after The Five Doctors, with the Doctor, Tegan and Turlough returning to the Eye of Orion to resume their holiday.


 * PROSE: Qualia
 * Set the day after The Five Doctors. Kamelion is put inside a cupboard made from off-cuts of the TARDIS in order to protect him from mental signals.


 * PROSE: Sontar's Little Helpers
 * The TARDIS console has recently been rebuilt, setting this shortly after The Five Doctors.


 * PROSE: The Velvet Dark
 * Tegan hasn't seen the Master since The Five Doctors, setting this before Birth of a Renegade.


 * AUDIO: The Sirens of Time
 * The original Big Finish website placed this between The Five Doctors and Warriors of the Deep. The Doctor is in his first outfit, and Tegan and Turlough are trapped in the TARDIS.


 * PROSE: The Oxaqua Incident


 * PROSE: Winter on Mesique


 * PROSE: Class 4 Renegade


 * PROSE: The Nemertines


 * AUDIO: Ringpullworld
 * Set several weeks after The Five Doctors, and before Warriors of the Deep. The TARDIS has had troubles since leaving the Death Zone.


 * COMIC: The Lunar Strangers
 * The Doctor is depicted in his first outfit, and Turlough is well adjusted to life in the TARDIS.


 * PROSE: Birth of a Renegade
 * The Doctor is depicted in his first outfit.


 * TV: Warriors of the Deep
 * Turlough has changed his mind about going home, deciding to stay with the Doctor and Tegan.


 * PROSE: Deep Blue
 * The Doctor, Tegan and Turlough decide to take a break in order to recover from the events on Sea Base 4, setting this immediately after Warriors of the Deep. The Doctor is wearing his first outfit, which is ruined by a Xaranti, leading the Doctor to hope he has a spare outfit in the TARDIS. Tegan decides that she wants to visit her grandfather, setting this shortly before The Awakening.


 * TV: The Awakening

Companionless travels

 * While Tegan and Turlough remain in Little Hodcombe, the Doctor slips away to answer a distress call, and then travels on his own for a while. (AUDIO: And You Will Obey Me)


 * AUDIO: And You Will Obey Me
 * The Doctor received 's distress signal while in Little Hodcombe, setting this immediately after The Awakening. He makes plans to pick up Tegan and Turlough.


 * PROSE: Fungus
 * The Doctor is inexplicably depicted in his first outfit.


 * PROSE: Do You Smell Carrots?


 * AUDIO: The Four Doctors


 * COMIC: A Stitch in Time
 * The Doctor is depicted in his second outfit.


 * COMIC: The Lost Dimension
 * The Doctor is illustrated in his second outfit, and is piloting the TARDIS with its The Five Doctors design.


 * AUDIO: The Helliax Rift
 * The Doctor is depicted in his second outfit.


 * PROSE: Anything You Can Do

Continued adventures with Tegan and Turlough

 * The Doctor spends a month trying to return Will Chandler home to 1643. (PROSE: The King of Terror) They are accompanied by Jane Hampden on their adventures. (PROSE: The Hollow Men) Tegan and Turlough spend three weeks in Little Hodcombe while the Doctor is away. (PROSE: The King of Terror)


 * PROSE: The King of Terror
 * According to the back cover, this is set between The Awakening and Frontios. The Doctor has recently spent a month returning Will to 1643.


 * The Doctor attends the third test at Headingley in 1981 with Tegan and Turlough. (PROSE: Graham Dilley Saves the World)


 * PROSE: Lant Land


 * PROSE: Last Minute Shopping
 * The cloister bell starts ringing, leading directly into The Assassin's Story.


 * PROSE: The Assassin's Story
 * The Web of Time is threatened when Margaret Thatcher is assassinated during her first year as Prime Minister, explaining why the TARDIS cloister bell was ringing in Last Minute Shopping.


 * PROSE: Rome


 * PROSE: The Fall of the Druids
 * Kamelion makes a rare trip outside the TARDIS to help the Doctor, Tegan and Turlough.


 * COMIC: The Forgotten
 * The Doctor is depicted in his second outfit, setting this after Deep Blue.


 * AUDIO: Nightmare Country

Final adventures with Tegan

 * TV: Frontios
 * The Doctor and Tegan leave Turlough behind on Frontios while they take the Gravis to Kolkokron.


 * AUDIO: Excelis Dawns
 * While attempting to transport the Gravis to Kolkokron, the TARDIS lands on Artaris. Tegan and the Doctor get into an argument about landing in the wrong place, prompting the Doctor to send Tegan to wait in the TARDIS for the whole of his adventure with Iris Wildthyme.


 * PROSE: Life After Queth
 * Twelve hours after leaving Frontios, the Doctor and Tegan successfully bring the Gravis to Kolkokron.


 * PROSE: Perfect Day
 * After dropping the Gravis off on Kolkokron, the Doctor and Tegan take a quick detour to see the end of the world before planning to return to Frontios.


 * AUDIO: Time in Office
 * Shortly after dropping the Gravis off on Kolkokron, the Doctor and Tegan are summoned to Gallifrey by Leela.


 * PROSE: Keeping It Real
 * Set shortly after Life after Queth. The Doctor takes a detour from returning to Frontios and invites Vivash O'Connell aboard the TARDIS.


 * COMIC: Comic Relief Comic


 * PROSE: The Creation of Camelot


 * PROSE: Categorical Imperative
 * The Doctor and Tegan go back in time to kill a dictator as a baby. However, the Doctor is unable to go through with the act and leaves.


 * COMIC: Where's the Doctor?
 * The Doctor and Tegan attend the coronation of Elizabeth II. Tegan is wearing her air hostess uniform, and the Doctor is depicted with his second outfit.


 * The Doctor and Tegan return to Frontios for Turlough, and get caught in a time corridor upon leaving with him. (TV: Frontios)


 * TV: Resurrection of the Daleks
 * The time corridor lands the Doctor into a confrontation with Davros and the Renegade Daleks. Tired of all the death and violence she has witnessed, Tegan decides to remain on Earth, causing the Doctor to rethink his lifestyle.

Lone travels with Turlough

 * PROSE: Lords of the Storm
 * Tegan has only just left, and the Doctor is checking to ensure that the Gravis did no lasting damage to the TARDIS in Frontios, setting this shortly after Resurrection of the Daleks.


 * PROSE: The Volcanis Deal


 * PROSE: One Last Try


 * PROSE: Zeitgeist
 * Weeks have passed since Lords of the Storm, and the Doctor is still upset about Tegan's departure.


 * AUDIO: Phantasmagoria


 * PROSE: Imperial Moon


 * AUDIO: Loups-Garoux


 * PROSE: White Man's Burden


 * PROSE: Observation
 * Turlough can operate the TARDIS accurately enough to move it forward in time by six months.


 * PROSE: Flashpoint
 * The Doctor is aided by a red-haired young man, presumably Turlough.


 * PROSE: One Wednesday Afternoon


 * AUDIO: Singularity


 * PROSE: Comforts of Home


 * PROSE: The Misadventure of Mark Thorne


 * PROSE: Piecemeal


 * PROSE: Do You Believe in the Krampus?

Back]]''
 * PROSE: ''[[One Step Forward, Two Steps Back (short story)|One Step Forward, Two Steps


 * AUDIO: The Memory Bank


 * AUDIO: The Last Fairy Tale


 * AUDIO: Repeat Offender


 * AUDIO: The Becoming


 * AUDIO: Trap For Fools


 * TV: Planet of Fire
 * Turlough returns to his home planet, and the Doctor destroys Kamelion at the android's request. Peri Brown joins the Doctor in his travels aboard the TARDIS.

Early travels with Peri

 * PROSE: Five Card Draw
 * The Doctor asks Peri to stay in the TARDIS library when he believes that the destination they've arrived at is an unsuitable place for him to start showing her the wonders of the universe, setting this immediately after Planet of Fire. After seeing her still in the company of his next incarnation, the Doctor realises that he will regenerate soon.


 * PROSE: Light at the End of the Tunnel
 * Peri has only just joined the Doctor and is still trying to figure out if she wants to stay with him. A few days have passed since leaving Sarn, setting this shortly after Planet of Fire. The Doctor expresses a desire to watch Les Misérables, and decides to attempt a trip to Headingley Stadium In 1981 again, leading directly into Black and White.


 * PROSE: Black and White
 * It has been three days since the TARDIS left Sarn, and Peri recalls spending two days on N'Tia in the interim. After visiting Headingley Stadium together, the Doctor takes Peri shopping in London to recover from her recent encounter with the N'Tians in Light at the End of the Tunnel. The Doctor and Peri watch Les Misérables.


 * PROSE: The Ultimate Treasure
 * It has only been a few days since the events of Planet of Fire. The Doctor gives his age as 850-years-old.


 * PROSE: Hot Ice
 * Peri is unfamiliar with the Ice Warriors, setting this before Red Dawn.


 * AUDIO: Red Dawn


 * PROSE: A Town Called Eternity
 * The Doctor encounters the Master for the first time since Planet of Fire, which occurred a week ago for the Doctor and Peri. Peri recalls visiting Mars in Red Dawn and Gelsandor in The Ultimate Treasure.


 * PROSE: The Church of Football
 * Peri has been travelling with the Doctor for two weeks, and mentions her shopping trip in Black and White. Peri's only other experience of time travel was her trip to Regent Street in 1981.


 * PROSE: Leap Second
 * The Doctor and Peri's previous trip was to Wembley Stadium in 1935, setting this immediately after The Church of Football.


 * PROSE: Superior Beings
 * Peri hasn't been time-travelling for long and is just getting used to the Doctor and the TARDIS. However, she is beginning to view the TARDIS as home. She is nineteen-years-old.


 * AUDIO: The Meaning of Red
 * Peri hasn’t been travelling with the Doctor for long. Peri spends several months separated from the Doctor.

Joined by Erimem

 * AUDIO: The Eye of the Scorpion
 * The Doctor gives Peri a tour of the TARDIS. Erimem joins the TARDIS crew, with a cat she had adopted. The Doctor claims not to have been to Egypt recently, suggesting a setting before Never Seen Cairo.


 * AUDIO: The Church and the Crown
 * Set immediately after The Eye of the Scorpion, with Erimem settling into the TARDIS, while the Doctor attempts to bring her to the Braxiatel Collection. Erimem names her recently adopted cat Antranak.


 * AUDIO: No Place Like Home
 * The Doctor recognises Shayde, setting this after The Tides of Time. Also set between The Church and the Crown and Nekromanteia, as Antranak appears and has already been named.


 * AUDIO: Nekromanteia
 * Erimem leaves Earth for the first time, setting this shortly after The Eye of the Scorpion. Antranak sacrifices his life saving the planet Talderun.


 * PROSE: Blood and Hope
 * Set between Nekromanteia and The Axis of Insanity. Peri has heard the Doctor use the alias "John Smith" before. Erimem's hair is starting to grow longer. The Doctor leaves Peri and Erimem behind to run an errand and, when he returns around ten seconds later from his companions' perspective, his hair is significantly longer.


 * PROSE: Graham Dilley Saves the World


 * PROSE: The Gangster's Story
 * The Doctor, Peri and Erimem spend several weeks in London.


 * AUDIO: The Axis of Insanity
 * Erimem does not have a TARDIS key, and Peri begins teaching her English.


 * AUDIO: The Roof of the World
 * Peri refers to their recent adventure in The Axis of Insanity. Erimem's ability to cope with time travel and her burgeoning relationship with Peri is explored. Peri has been travelling with the Doctor for at least a month.


 * AUDIO: Three's a Crowd
 * Erimem has taken to wearing a key around her neck, and is still recovering from the events of The Roof of the World. Peri hasn't been travelling with the Doctor for long.


 * AUDIO: The Council of Nicaea


 * PROSE: The Coming of the Queen


 * AUDIO: The Kingmaker

Unfinished business

 * The Doctor leaves Peri and Erimem in 1966 Monte Carlo to recover the Veiled Leopard. (AUDIO: The Veiled Leopard)


 * PROSE: Time on a Vine
 * The Doctor spends eighteen months trying to return a woman to Earth. Nyssa and Tegan are mentioned as former companions of the Doctor, and he is depicted wearing his second costume.


 * PROSE: Encounter on Burnt Snake Flat
 * The Doctor appears to be travelling alone, and encounters Tegan in 1987 Australia, setting this after Resurrection of the Daleks. The Doctor is depicted in his second costume and the events of Snakedance are referenced.


 * COMIC: Untitled


 * PROSE: The Glass Princess
 * The Doctor appears to be travelling alone.


 * PROSE: Greenaway
 * The Doctor appears to be travelling alone.


 * PROSE: The Juror's Story
 * The Doctor appears to be travelling alone.


 * PROSE: Lily
 * The Doctor appears to be travelling alone, and meets with Sarah Jane Smith, setting this after The Five Doctors.


 * PROSE: The Power Supply
 * The Doctor appears to be travelling alone.


 * PROSE: Diary Extract
 * The Doctor is depicted in his second outfit, and appears to be travelling alone.


 * AUDIO: The Gathering
 * The Doctor attempts to visit the Ice Caves of Shabadabadon, but ends up arriving at the Gogglebox. He decides to solve the mystery of energy spikes appearing across time, originating in 1980s Baltimore, before collecting Peri and Erimem from Monte Carlo. During his investigation, he is reunited with Tegan Jovanka in 2006 Brisbane.

Final adventures with Erimem

 * AUDIO: The 100 Days of the Doctor
 * The Doctor attends the inauguration of the three-bodied lustrousness of the Vix with Peri and Erimem.


 * AUDIO: Son of the Dragon
 * Erimem is reasonably proficient in written English.


 * AUDIO: The Mind's Eye


 * PROSE: Far Away in a Manger
 * The Doctor recalls the events of Blood and Hope.


 * AUDIO: The Bride of Peladon
 * Erimem leaves the Doctor and Peri.

Second quest for the Key to Time

 * AUDIO: The Judgement of Isskar
 * The Doctor has been intentionally separated from Peri until the Key to Time is found. He recalls the events of Red Dawn. The Doctor and Amy are ambushed by the Black Guardian, leading directly into The Destroyer of Delights.


 * AUDIO: The Destroyer of Delights


 * AUDIO: The Chaos Pool
 * The Doctor destroys the Key to Time in the Chaos Pool, and then makes plans to return to Peri.

Final travels

 * AUDIO: Mission of the Viyrans
 * Set shortly after Erimem's departure in The Bride of Peladon.


 * PROSE: Fascination
 * Peri has been traveling with the Doctor for months now, and has her own TARDIS key.


 * PROSE: Warmonger
 * The Doctor and Peri are separated from each other for a year, during which time Peri becomes a guerrilla fighter on the planet Sylvana.


 * COMIC: The Curse of the Scarab


 * PROSE: Never Seen Cairo


 * AUDIO: Wet Walls


 * PROSE: The Canvey Angels


 * PROSE: A Life in the Day
 * The Doctor and Peri return to the setting of an adventure they had a month previously.


 * AUDIO: Exotron


 * AUDIO: Urban Myths


 * PROSE: Methuselah


 * AUDIO: A Room With No View


 * AUDIO: Rulebook


 * COMIC: Supremacy of the Cybermen Prologue: The Fifth Doctor
 * In an alternate timeline created by Rassilon and the Cybermen, the Doctor is forced to land the TARDIS on a Cyberman occupied Skaro.


 * COMIC: Supremacy of the Cybermen
 * The Doctor and Peri attempt to flee from the Cybermen following their arrival on Skaro in Prologue: The Fifth Doctor.


 * AUDIO: Peri and the Piscon Paradox
 * Ending leads directly into The Caves of Androzani.


 * TV: The Caves of Androzani
 * Poisoned by spectrox toxaemia, the Doctor regenerates into his next incarnation after ensuring that Peri is cured of the poisoning.


 * AUDIO: Circular Time: Winter
 * Set during the Doctor's regeneration in The Caves of Androzani: Part 4.

Currently unplaced

 * These entries are placed here due to being part of ongoing storylines that have yet to offer sufficient enough evidence to be placed in a specific part of this Doctor's timeline, unless further evidence arises in the stories to come.

Lost in the Time War

 * AUDIO: Aimed at the Body
 * The Doctor arrives in 1930s Australia. He meets Douglas Jardine, Flora Calderwood and Mrs Calderwood. The three people mysteriously disappear and the Doctor discovers the Daleks are involved.


 * AUDIO: Lightspeed
 * The Doctor has followed the Daleks' time trace, setting this immediately after Aimed at the Body. The Doctor makes a comment about not being able to get away from flight attendants, suggesting this takes place at some point during the Doctor's travels with Tegan.


 * AUDIO: The Bookshop at the End of the World


 * AUDIO: Interlude
 * The Doctor recalls the events of The Bookshop at the End of the World, which was his previous adventure.

Awaiting placement

 * These entries are placed here until a suitable position in the timeline can be determined based on the available evidence.

Space

 * Requires information from the Doctor Who Quiz Book of Space.

Science

 * Requires information from the Doctor Who Quiz Book of Science.