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Tom Baker
The Doctor

Lalla Ward
Romana

David Brierly
K9 (voice)

Lewis Fiander
Tryst

David Daker
Rigg

Geoffrey Bateman
Dymond

Jennifer Lonsdale
Della

Stephen Jenn
Secker

Richard Barnes
Crewman

Barry Andrews
Stott

Geoffrey Hinsliff
Officer Fisk

Peter Craze
Officer Costa

Annet Peters
Passenger

Lionel Sansby
Passenger

Maggie Petersen
Passenger

Sebastian Stride
Crewman