A Biography of the Doctor
The Second Doctor
"Officially I'm here quite unofficially."
- The Second Doctor explaining his status with the Time Lords in The Two Doctors
Fans have long theorised that the second Doctor had a series of adventures between his trial at the end of The War Games and his eventual regeneration. This theory has been named "season 6b" by fans. The main evidence for this theory is as follows
- The Doctor ages from 450 before his trial (Tomb of the Cybermen) to 750 afterwards (Pyramids of Mars, and there are very few points between those stories where he isn't travelling with a human companion
- In The Five Doctors, he knows the outcome of his trial and is able to steer his TARDIS – something he couldn't do during his TV stories.
- In The Two Doctors, he is seen working for the Time Lords and is able to steer his TARDIS – two things that were not true in any of the stories in his own era. He also has a Stattenheim remote control for the TARDIS
The placement of stories in this gap is highly speculative, but unless there is clear evidence otherwise, we have placed any stories where the Doctor is travelling solo, working with the Time Lords, or apparently able to steer the TARDIS in this gap.
The Three Doctors
The Time Lords from the third Doctor's era take the second Doctor out of his timestream in order to help the third Doctor defeat Omega. With advice from the first Doctor, the two are successful.
Notes: The Doctor remembers The Invasion. Some versions of the Season 6b theory say that it is the Time Lords from this story who give the second Doctor a reprieve. However, as there are some irregularities between what we see of the Doctor's trial on screen and later accounts this is the less likely explanation.
Mother's Little Helper
The Doctor visits Earth, where he tracks down a boy with the ability to absorb others' pain, taking it away from them. With the help of a local girl he finds the boy in the clutches of a woman who is abusing his power, to the point where it will kill him. The boy eventually releases his pain, and that of the girl, into the woman - killing her. The Doctor then takes the boy to safety.
Notes: No indication when this is in the Doctor's timeline, though it looks like the Doctor is travelling alone. Nanci observes that the Doctor smells stuffy and old as though hes been mothballed for twenty years and only just brought out of storage [p.188].
(Short Trips and Side Steps)
The Doctor visited the late 20th Century to investigate a time distortion. He traced it to a being named Dobtcheff, who has gathered a group of influenced humans onto a tube carriage. Dobtcheff had travelled back in time and crashed on Earth. He subsequently infected a human child with his mind and was trying to reunite his mind. Those on the tube carriage contained the most intact fragments. The Doctor was able to stop Dobtcheff, who died in the incident.
Notes: The Doctor can control the TARDIS (page 200). He seems to think that he may have only just used his sonic screwdriver (The War Games) or that it could have been 30-years ago (page193), tying in with a similar observation in Mothers Little Helper [page189].
The Five Doctors
The Doctor visits a UNIT reunion in the 1980s. Whilst he is catching up with the Brigadier the two are kidnapped by a time scoop. They arrive in the Death Zone on Gallifrey, where they meet up with the Doctor's first, third, and fifth incarnations and some of their companions. Aided by Rassilon, they defeat a plot by President Borusa to gain immortality. The Doctor is then returned to his own timestream.
Notes: The Second Doctor remembers Jamie and Zoe's sentences in The War Games.
(More Short Trips)
The Doctor visits Earth, where he becomes scientific advisor to a film about the Cybermen invasion of the late 1960s. Working on behalf of the Brigadier he spreads misinformation about the invasion. The Doctor discovers that the producer's daughter, Kate, has been implanted with Cyberman technology. She has been used to spy on the film by a Cyber infiltration unit. He forces the unit to flee, removes the implant from Kate, and then restores what it has destroyed in terms of memories.
Notes: The Doctor is clearly travelling alone and remembers The Invasion.
Who Killed Kennedy
(second Doctor cameo)
A short dishevelled man, possibly the second Doctor, attends Dodo's funeral
Notes: If this is the second Doctor it must take place here.
The Two Doctors
The Doctor and Jamie are sent to investigate time travel experiments on space station Camera in the Third Zone. One of the Androgums on the station has decided to provide the Sontarans with the technology they are developing. The Doctor is captured, and they intend to dissect him to find out about the Rassilon Imprimatur - a biological element of time travel. The Doctor's suffering alerts his sixth incarnation, who comes to his rescue.
Notes: This features the second Doctor and Jamie, who have left Victoria behind to learn graphology. The Doctor is able to pilot his TARDIS, has a Stattenheim remote control, and is working for the Time Lords.
As the Doctor regenerates he recalls the events of his second incarnation.
Notes: Pages 147-148. This is implied to be during the final scene of The War Games, but may be later.