Cast

Jon Pertwee

The Doctor

Caroline John

Liz Shaw

Nicholas Courtney

Brigadier Lethbridge-Stewart

Ronald Allen

Ralph Cornish

John Abineri

Carrington

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Robert Cawdron

Taltalian

Michael Wisher

John Wakefield

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Cheryl Molineaux

Miss Rutherford

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Ray Armstrong

Grey

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Robert Robertson

Collinson

Crew

Barry Letts

Producer (Production)

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Michael Ferguson

Director (Directing)

David Whitaker

Writer (Writing)

Dudley Simpson

Music (Sound)