Cast
- Tom Baker (The Doctor)
- Louise Jameson (Leela)
- Gareth Thomas (Morax)
- Jane Goddard (Nurse Torvik / Computer)
- John Voce (Chief Surveyor Hardwick)
- Jessica Martin (Deputy Surveyor Sutton)
- Blake Ritson (Pilot Kellaway)
Doctor Who - The Fourth Doctor Adventures
3.5. Doctor Who: Last of the Colophon
Written by Jonathan Morris
Starring Tom Baker Louise Jameson