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Runtime
Director
Where to Watch
Tom Baker
as The Doctor
Mary Tamm
as Romana
Neil McCarthy
as Thawn
John Abineri
as Ranquin
Philip Madoc
as Fenner
Glyn Owen
as Rohm-Dutt
Carl Rigg
as Varlik
Frank Jarvis
as Skart
John Leeson
as Dugeen
Grahame Mallard
as Harg
Norman Stewart
Graham Williams
Producer
John Nathan-Turner
Dudley Simpson
Original Music Composer
Delia Derbyshire
Theme Song Performance
Robert Holmes
Writer
Anthony Read
Script Editor
