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You may be looking for Farewell, Sarah Jane (webcast).

Goodbye, Sarah Jane Smith was the sixth and final serial of series 4 of The Sarah Jane Adventures. It was written by Clayton Hickman and Gareth Roberts and directed by Joss Agnew. It served as the last story in any media to feature K9 Mark IV for almost a decade, before the robot dog finally returned in 2020's Farewell, Sarah Jane, a story celebrating the life of Elisabeth Sladen.

In a sad case of irony arising from the title and plot, it was the final story of the programme to be broadcast during the life of its star, Elisabeth Sladen, who passed away from cancer shortly after its broadcast.


Sarah Jane has begun developing a form of dementia, and she realises that her ability to defend the Earth is diminishing. She must now hand over the task to surer hands. A seemingly suitable replacement, Ruby White, has arrived on Bannerman Road, but can she be trusted?


Part one[]

A meteor hurtles towards Earth. Mr Smith redirects it to a safer crash site and says it will contain germ pathogens. The gang hurry to neutralise the germs. The meteorite reads all clear. Then a strange woman appears, claiming to be saving the world. She drives off in a red sports car and Clyde points out that she is doing the same thing as Sarah Jane. Sarah Jane does not look pleased.

They find the woman has just moved in across the street and go to find out who she is. She behaves coldly towards them, telling them to get out of her house. Her name is Ruby White and she sees them as amateurs. She moved to Ealing because of all the alien activity — Trueman, the Bubble Shock! factory, rhinos driving police cars and alien plant life. Sarah Jane decides to stay away from Ruby, but keep her eyes open.

The next day, Gita waves to Sarah Jane on her way home. Sarah Jane says she has to make Luke's tea and then realises he is still at university. Clyde and Rani go to check that she is alright. She calls Luke, just two hours after she last spoke to him. She can't remember K9's name. Rani suggests she take a holiday and visit Luke. Mr Smith gives a red alert. A fleet of Dark Horde warriors are heading for Earth. They trace the scan beam and lock onto the attic to neutralise enemy technology. Mr Smith diverts the teleport to an uninhabited area. Sarah Jane gives Clyde a gun and says they must protect the Earth by any means.

An advance party of three warriors lands on Earth. Sarah Jane plans to use a device to overload their sensors. She asks Clyde for the sonic lipstick, but he said she told him to bring the gun, which she reveals isn't even charged. Sarah Jane has made a big mistake. Then Ruby arrives and tosses spheres to Rani and Clyde. She uses an artificial intelligence to convince the Dark Horde that they are faced by a stronger version of themselves. Their logical reaction is to flee. Clyde suggests calling the AI "Mr White".

They take Ruby back to the attic, where Mr White gets along well with Mr Smith. Sarah Jane says she'd be glad to have an adult friend. Whilst explaining to Ruby how she became involved with aliens, Sarah Jane forgets the Doctor's name for a moment, something she can't believe she did. She orders Mr Smith to medi-scan her. He tells her there is proof of brain tissue deterioration. Sarah Jane takes this to mean she is too old to continue defending the Earth. Ruby makes friends with Clyde and Rani, who are eager to show off their knowledge of aliens. Sarah Jane feels very left out.

Sarah Jane asks Ruby to take over the duty of protecting the Earth, offering her the house, Mr Smith and Clyde and Rani. Ruby agrees. Sarah Jane orders Mr Smith to wipe her voice from the command program so she can no longer give him orders and goes to leave, not even bothering to tell Luke she is going. She realises something is wrong and begs Ruby to help her. Instead, Ruby teleports her to a "secret cellar" which houses her stomach. She reveals she is the one making Sarah Jane sick draining her life force. She is a Qetesh, whose race devours people's thrills and emotions. She targeted Sarah Jane, who has the most exciting life on Earth. Mr White is making a farewell message for Clyde and Rani so they will believe Sarah Jane has gone because "she" will tell them. Ruby's stomach drains Sarah Jane directly as Ruby gloats about how she will feast on the Earth.

Part two[]

Ruby explains that rather than stop aliens, she will help them and feed on the excitement and terror that humanity will feel. Back in the attic, Clyde and Rani watch Mr White's faked video of Sarah Jane. Clyde blames Rani for putting the idea of a "holiday" in her head. Mr Smith starts acting strangely; unable to warn Clyde directly, he attempts to spell out "Beware Ruby". Just as Clyde realizes what Mr Smith is trying to tell him, Ruby shuts down Mr Smith and teleports Clyde to her spaceship. She reveals that it was her prison, until she reprogrammed Mr White, who was just a game console that was left as her only entertainment. Ruby leaves Clyde in the prison to suffocate.

Luke returns

Luke returns from Oxford.

Rani tries to call Clyde and hears a knock at the door. She opens it to find Luke. K9, who is back in Oxford, tracks Clyde's phone to space. Rani goes to place the phone near Mr White so K9 can reset him and free Mr Smith from his influence, as well as rescue Clyde. Clyde leaves a message on his phone for the others to find, then collapses. Rani distracts Ruby, who sees through the ruse and assaults her, but luckily K9 resets Mr White in time. K9 rescues Clyde and the restored Mr Smith imprisons Ruby in a containment vortex, but she escapes. Clyde and Rani go to rescue Sarah Jane. Ruby corners them in the cellar and threatens to devour them completely.

Luke arrives and gives Ruby a warning to leave Earth. When she refuses, Mr White sends a hologram so everyone on Earth sees a meteor hurtling straight for them. Ruby cannot handle the sudden inrush of emotions and thrills from six billion people. The stomach swells, then shrinks and releases all the energy it took from Sarah Jane back into her. Sarah Jane sends Ruby back to her prison ship, where Ruby swears to get revenge on her. Sarah Jane thanks her team for saving her, knowing she could count on them while Mr Smith and K9 finally seem to have put aside their animosity after working together to defeat Ruby. Luke takes them all out for a treat and Sarah Jane says that although the universe is full of amazing things, they have "stiff competition" on Earth.



General production staff

Script department

Camera and lighting department

Art department

Costume department

Make-up and prosthetics

General post-production staff

Special and visual effects


Not every person who worked on this adventure was credited. The absence of a credit for a position doesn't necessarily mean the job wasn't required. The information above is based solely on observations of the actual end credits of the episodes as broadcast, and does not relay information from IMDB or other sources.

Despite appearing in Part 2, K9 did not get a "created by Bob Baker and Dave Martin" credit like in other appearances.




Cultural references from the real world[]

  • Rani teases Clyde when she says she'll get her hair "done like Lady Gaga, all skewiff, then dye it streaked."


Story notes[]

  • This is the only story featuring Sarah Jane Smith's name in the title that does not feature the Trickster as the main antagonist.
  • Shortly after this story was broadcast, Elisabeth Sladen's health began to deteriorate, eerily similar to her character's plight in this episode. She ultimately passed away shortly after production began on the following series.


to be added

Filming locations[]

46 Victoria Road, Penarth - Ruby White's house at 46 Old Forest Road

Treforest Tinplate Works, Rhydyfelin, Pontypridd - The gang and Ruby encounter Dark Horde at the junkyard

Thames House (stock footage from Children of Earth: Day Three) - The holographic meteors sail down on London

Production errors[]

If you'd like to talk about narrative problems with this story — like plot holes and things that seem to contradict other stories — please go to this episode's discontinuity discussion.
  • In part two at around the 24:45 mark, you can see the VFX tracking markers on Mr Smith used to overlay his GUI.


Home video releases[]

DVD releases[]

  • This story was included in the 4th Series DVD release (Region 2 release: 31st October 2011).
  • It was also released in the Complete Collection Series 1-5 boxset release (Region 2 release: 6th February 2012).

Blu-ray releases[]

To be added.

External links[]