Spare Parts

On a dark frozen planet where no planet should be, in a doomed city with a sky of stone, the last denizens of Earth's long-lost twin will pay any price to survive, even if the laser scalpels cost them their love and hate and humanity.

And in the mat-infested streets, round tea-time, the Doctor and Nyssa unearth a black market in second-hand body parts and run the gauntlet of augmented police and their augmented horses.

And just between the tramstop and the picturehouse, their worst suspicions are confirmed: the Cybermen have only just begun, and the Doctor will be, just as he always has been, their saviour...

• Yvonne Hartley: Kathryn Guck;
• Dad: Paul Copley;
• Thomas Dodd: Derren Nesbitt;
• Sisterman Constant: Pamela Binns;
• Frank Hartley: Jim Hartley;
• Mrs. Ginsberg: Ann Jenkins;
• Doctorman Allan: Sally Knyvette;
• Zheng / Cyber Voices / Radio Announcer / Citizen / Nurse: Nicholas Briggs;
• Minister / TV Commentator: Alistair Lock;
• Philpott / Nurse: Gary Russell;