After the TARDIS collides with a spacecraft delivering human tributes to the evil bull-like Nimon, the Doctor and Romana must stop the fearsome alien's quest to rule the galaxy.
Tom Baker
The Doctor
Lalla Ward
Romana II
David Brierly
K9 (voice)
Graham Crowden
Soldeed
Michael Osborne
Sorak
Bob Hornery
Pilot
Malcolm Terris
Co-Pilot
Clifford Norgate
Nimon (voice)
Robin Sherringham
Nimon
Bob Appleby
Trevor St. John Hacker
Janet Ellis
Teka
