Written by Bob Baker and Dave Martin
"Some kind of organism that attacks the mind, the intelligence. It's trying to take me over, Leela. It's trying to change me"
Episode Title | Premiere Date |
Episode 1 | 01/10/1977 |
Episode 2 | 08/10/1977 |
Episode 3 | 15/10/1977 |
Episode 4 | 22/10/1977 |
The TARDIS picks up a mayday message, but before the Doctor and Leela can fully respond, the police box also passes through the mysterious cloud and the Doctor falls victim to a strange virus. As the situation worsens, his only hope lies in the unlikely combination of the eccentric scientist Professor Marius, and his dog-shaped computer, K9...
Featuring
Cast & Crew
The Doctor: Tom Baker
Leela: Louise Jameson
K9 (voice): John Leeson
Lowe: Michael Sheard
Professor Marius: Frederick Jaeger
The Nucleus (voice): John Leeson
Marius' Nurse: Elizabeth Norman
Producer: Graham Williams
Director: Derrick Goodwin
Scriptwriters: Bob Baker and Dave Martin