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Reparto

Tom Baker
The Doctor

Louise Jameson
Leela

Denis Lill
Dr. Fendelman

Scott Fredericks
Max Stael

Wanda Ventham
Thea Ransome

Edward Arthur
Adam Colby

Daphne Heard
Martha Tyler

Geoffrey Hinsliff
Jack Tyler

Edward Evans
Ted Moss

Graham Simpson
Hiker

Derek Martin
David Mitchell