Romana fancies a proper holiday and convinces the Doctor to visit the leisure planet Argolis, where a takeover by the Argolins' historic enemy is underway.
Tom Baker
The Doctor
Lalla Ward
Romana II
John Leeson
K9 (voice)
Adrienne Corri
Mena
Laurence Payne
Morix
John Collin
Brock
David Haig
Pangol
Nigel Lambert
Hardin
Martin Fisk
Vargos
Roy Montague
Guide
Ian Talbot
Klout
Harriet Reynolds
Tannoy (voice)
