The Tenth Planet Part 4
Cutler blames everyone from the Doctor to Ben to his own personnel for the failure of his plan to render Earth toxic to the Cybermen, who have now invaded other parts of Earth and taken Polly as a hostage to ensure the Doctor’s cooperation. Time is running out for the Cybermen as Mondas continues to drain Earth’s energy, something which the Doctor warns will destroy their world as well as damaging Earth. The Doctor seems to know about the fate of Mondas and its people already…but he also seems to have a premonition of something else, a momentous change that could render him helpless in the ensuing battle with the emotionless Cybermen.
written by Kit Pedler (credited onscreen as “Kitt Pedler”)
and Pat Dunlap and Gerry Davis (not credited onscreen)
directed by Derek Martinus
music not credited
Cast: William Hartnell (The Doctor), Anneke Wills (Polly), Michael Craze (Ben), Robert Beatty (General Cutler), David Dodimead (Barclay), Christopher Dunham (R/T technician), Callen Angelo (Terry Cutler), Christopher Matthews (Radar technician), Dudley Jones (Dyson), Harry Brooks (Krang), Reg Whitehead (Jarl), Gregg Palmer (Gern), Steve Plytas (Wigner), Ellen Cullen (Geneva Technician), Peter Hawkins (Cyberman voice), Roy Skelton (Cyberman voice), Bruce Wells (Cyberman), John Haines (Cyberman), John Knott (Cyberman), Sheila Knight (Secretary), Patrick Troughton (The Doctor)
Notes: For the first Doctor, the entirety of the 2017 Christmas special Twice Upon A Time (a story in which he meets his fourteenth incarnation) happens in the interval between the Doctor rushing out into the Antarctic cold, and Ben and Polly catching up to him in the TARDIS.
LogBook entry & review by Earl Green
Before he is executed by the Daleks for crimes against them, the Master asks that his remains be given to the Doctor for transport to Gallifrey. En route in the Doctor’s TARDIS, the Master’s remains break free of their container, still pulsating with malevolent life. The Master sabotages the TARDIS, forcing an emergency landing in San Francisco on December 30, 1999. The moment he steps out of the TARDIS, the Doctor is caught in the middle of a gang shooting. One young survivor of the shootout, Chang Lee, calls an ambulance for the Doctor, unwittingly providing an escape for the Master as well. Cardiologist Grace Holloway ignores the X-rays which show the Doctor’s two hearts and tries to operate on him. The operation and the anasthetics end the Doctor’s seventh life. The Doctor regenerates in the morgue as the Master takes over the body of a paramedic. Grace resigns after losing her patient, but the newly reborn Doctor, suffering from amnesia, escapes the hospital and follows her home. After convincing Grace of his alien nature and regaining his memory, the Doctor discovers that his future regenerations are the Master’s targets. Aided by Chang Lee and a hypnotized Grace, the Master captures the Doctor and tries to use the TARDIS’ Eye of Harmony to transfer the Doctor’s life energy into the paramedic’s decaying body, but opening the Eye on Earth will destroy the planet at midnight on December 31. When Chang Lee rebels against the Master’s dominance, the Master kills him and releases Grace to help him. Grace escapes and sets the TARDIS into motion, freeing Earth from danger. The Master’s scheme fails, but he kills Grace after she releases the Doctor. The Master falls into the Eye of Harmony and vanishes from existence, while the TARDIS restores Grace and Chang Lee to full health. The Doctor brings his passengers back to Earth just after the dawn of the year 2000. Grace turns down the Doctor’s offer to accompany him on his travels, and the Doctor departs in the TARDIS.
Cast: Paul McGann (The Doctor), Eric Roberts (The Master), Daphne Ashbrook (Dr. Grace Halloway), Sylvester McCoy (The Doctor), Yee Jee Tso (Chang Lee), John Novak (Salinger), Michael David Simms (Dr. Swift), Eliza Roberts (Miranda), Gordon Tipple (The Old Master), Dave Hurtubise (Professor Wagg), Jeremy Badick (Gareth), Dolores Drake (Curtis), Catherine Lough (Wheeler), William Sasso (Pete), Joel Wirkkunen (Ted), Mi-Jung Lee (TV Anchor), Joanna Piros (TV Anchor), Bill Croft (Cop), Ron James (Motorbike Cop/Driver), Dee Jay Jackson (Security Guy), Darryl Avon (Gangster), Byron Lawson (Gangster), Paul Wu (Gangster), Johnny Mam (Gangster), Michael Ching (Chang Lee’s Friend), Dean Choe (Chang Lee’s Friend), Danny Groesclose (Driver)
2039 A.D.: After encountering rumors of illegal genetic experiments being conducted by the U.S. military under the cover of the Deep-sea Energy Exploration Project, the Doctor drops in with the TARDIS and confirms his worst fears. The ruthless General Flint has been using Professor Vollmer’s ecologically friendly energy experiments, harnessing power from undersea geothermal vents, as a cover for experiments that even the Army has now disavowed. Faced with the impending end of his secret project, Flint has Vollmer injected with a cocktail of accelerated DNA cultivated from sea creatures, his last chance to prove the value of his project. To prevent Vollmer’s mutation into an amphibious life form, the Doctor kills him, but not before Vollmer makes the Doctor promise to look after his daughter. General Flint confiscates the Doctor’s TARDIS key, forcing the Time Lord to abandon the seabase in an escape submarine before Flint’s plan comes to a deadly end: radioactive dirty bombs detonate around the DEEP base, ensuring that even the most curious and determined explorer can’t get near it. 
Trapped by the Time Lords and tried for the crime of interfering in history, the Doctor is scheduled to be exiled to Earth – but he escapes into his TARDIS and leaves Gallifrey. Not that this really does him much good, as he winds up trapped on Earth anyway. A few incarnations later, the Doctor’s situation has become even more unsettling – he has not only changed bodies, but changed gender as well. Without her TARDIS, the Doctor becomes bored, listless, and – with the help of two friends she makes on a job she takes to eke out a meager existence – perhaps just a little bit alcoholic. Or perhaps a lot – the Doctor begins to see and hear her previous (male) incarnation, warning her of alien invasions and labyrinthine plots against modern-day Earth. When the Time Lords send two agents to track the Doctor down and bring her back to justice (though they don’t know that the Doctor is now a woman), the only thing standing between the Doctor and her doom is an increasing reliance on the bottle. When it comes right down to it, which oblivion will the Doctor choose?
Doctor Who: Unbound audio story, 
since then. Hitler doesn’t recognize the Doctor, who has regenerated four times since the two were uneasy allies during the events of the second New Adventures novel, “
the fourth Doctor before him, has a checkered history with the Sisterhood of Karn, previously seen on TV in the Tom Baker story