The Doctor and Romana follow a distress signal which leads to the jungle planet Chloris, whose ruthless ruler Lady Adrasta harbors a deadly creature in a pit.
Tom Baker
The Doctor
Lalla Ward
Romana
Eileen Way
Karela
Myra Frances
Lady Adrasta
Geoffrey Bayldon
Organon
David Brierly
K-9 (voice)
David Telfer
Huntsman
Morris Barry
Tollund
John Bryans
Torvin
Edward Kelsey
Edu
Tim Munro
Ainu
Philip Denyer
Guard
