The Girl Who Died (TV story)

 was the fifth episode of the ninth series of Doctor Who produced by BBC Wales.

The story is notable because it reveals the reason as to why the Twelfth Doctor regenerated with the same appearance as Lobus Caecilius: to remind himself to, no matter how impossible it seemed, always save someone, as he had saved Caecilius in his tenth incarnation. This marks the first time in the narrative of Doctor Who that an explanation has been given for why the Doctor looked similar to an individual he had met before, as Colin Baker, who had played the Time Lord Maxil, would later play the sixth incarnation of the Doctor. But unlike the Twelfth Doctor it was never explained how or why the Sixth Doctor took on an appearance similar to Maxil's.

It also revisited the idea of something alien taking over a historic era by impersonating an important figure. The concept was last seen in Robot of Sherwood.

It further re-introduced the concept of immortality, which was last seen in Journey's End with Jack Harkness, a former companion to the Doctor.

Synopsis
The Doctor and Clara are forced to help protect a Viking village from the Mire, one of the deadliest warrior races in the galaxy. Are they fated to suffer death due to being outnumbered? So what is it about a simple Viking girl that interests the Time Lord?

Plot
to be added

Cast

 * The Doctor - Peter Capaldi
 * Clara - Jenna Coleman
 * Ashildr - Maisie Williams
 * Odin - David Schofield
 * Nollarr - Simon Lipkin
 * Chuckles - Ian Conningham
 * Lofty - Tom Stourton
 * Limpy - Alastair Parker
 * Hasten - Murray McArthur
 * Heidi - Barnaby Kay

The Doctor

 * The Doctors reads his Two Thousand Year Diary to remind himself of the Mire, a reference to his Five Hundred, (TV: The Tomb of the Cybermen, etc.) and later, Nine Hundred Year Diary. (TV: Doctor Who)
 * The Doctor references Clarke's Law, which states that "any sufficiently advanced form of technology is indistinguishable from magic."
 * The Doctor is saving Velosians from being attacked.
 * The Mire takes the Vikings to their spaceship, to their extracting room.
 * The Doctor attempts at a Viking saying by saying "Fly like a bird, run like a nose...".
 * The Doctor suggest the leftover Vikings are web-designers, before realizing that one didn't exist at that time.

Creature

 * The Doctor suggests that a Love Sprite have found its way into Clara's space suit.
 * The Viking village used electric eels to defeat the Mire, based on the Doctor's idea.

Popular culture

 * The Doctor gives a bearded Viking the nickname of "ZZ Top". He calls another Viking "Noggin the Nog".
 * The Doctor owns a painting of Dutch painter Rembrandt.
 * Clara adds the Benny Hill theme to the video of the Mire's defeat.

Story notes

 * This story features the use of footage from The Fires of Pompeii and Deep Breath when the Twelfth Doctor finally realizes where he got his face.
 * This is the 100th story of the BBC Wales era of Doctor Who.
 * This is the third episode in a row that we hear the Cloister Bell rings, the first time this has happened on the show.

Ratings

 * BBC One: 4.85m
 * BBC America: to be added

Filming locations
to be added

Continuity

 * The Doctor attempts to use his sonic sunglasses. (TV: The Magician's Apprentice et al)
 * The Doctor uses his catchphrase originated from his third incarnation: "reverse the polarity of the neutron flow".(TV: The Sea Devils)
 * The Doctor is able to speak Baby, much like his predecessor. (TV: A Good Man Goes to War, Closing Time)
 * The Sixth Doctor had previously wanted to save someone because he grew to like her, though on that occasion Evelyn Smythe stopped him from changing history to do it. (AUDIO: Arrangements for War)
 * The Doctor uses his yo-yo. (TV: Robot et.al.)
 * The Doctor reads his Two Thousand Year Diary. He previously read his Five Hundred Year Diary (TV: The Tomb of the Cybermen et.al.) and his Nine Hundred Year Diary. (TV: Doctor Who)
 * The Seventh Doctor also referred to Clarke's Law. (TV: Battlefield)
 * When Clara says there's something in the spacesuit, the Doctor said she did spend a long time in the "spider mines". (TV: Kill the Moon)
 * The Cloister Bell rings. (TV: Logopolis et.al.)
 * The Doctor's red spacesuit is used. (TV: The Impossible Planet/The Satan Pit et.al.)
 * The Doctor said he's not a hugger. (TV: Deep Breath et.al.)
 * The Doctor had previously wondered where he had gotten his face, and had theorized he was trying to tell himself something. (TV: Deep Breath) He finally realizes his face matches that of Lobus Caecilius and that the message he was telling himself was to save a person. (TV: The Fires of Pompeii)
 * Upon thinking about how Ashildr's situation will play out now that she is functionally immortal, the Doctor says, "Time will tell. It always does." His seventh incarnation said this to Ace when she hesitantly asked if they "did good" after the Shoreditch Incident, aware that the victory over the Daleks came at the expense of many lives. (TV: Remembrance of the Daleks)
 * The Doctor states that Ashildr is immortal "barring accidents". (TV: The War Games)
 * The Third Doctor had previously met the real Odin. (PROSE: The Spear of Destiny)
 * The Eighth Doctor had previously given someone immortality while saving their life. (COMIC: The Road to Hell)
 * The Seventh Doctor previously talked about ripples in time and their effect on the universe. (TV: Remembrance of the Daleks)
 * Captain Jack Harkness also became immortal after he was brought back to life, in that case by Rose Tyler. (TV: The Parting of the Ways)
 * The First Doctor had previously met Vikings. (TV: The Time Meddler)
 * The Doctor demonstrates he's good at swordplay. The First Doctor and Tenth Doctor also demonstrated this. (TV: The Crusade, The Christmas Invasion)
 * The Doctor recently had to forcefully stop Mason Bennett from trying to save Alice O'Donnell from being slain by the Fisher King because it was a fixed moment in time. (TV: Before the Flood)
 * The Doctor worries that saving Ashildr's life will have a negative effect on time, and that he did it because he had gotten emotional. In his tenth incarnation, he interfered with a fixed point in time because he had let vanity and spite dictate his actions, and ended up causing more harm than good in altering the course of history. (TV: The Waters of Mars)

DVD releases
to be added

Blu-ray releases
to be added