Cast

Richard Attenborough

Peter Watson

Bernard Lee

Inspector Thompson

Donald Houston

Dr. Sanderson

Dorothy Alison

Mrs. Barnes

Patricia Jessel

Mrs. Lawrence

Virginia Maskell

Helen Grey

Kenneth Griffith

Pollen

Alfred Burke

Mr. Barnes

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Charles Houston

Nicholas

Maureen Connell

Eunice Blair

Crew

Don Chaffey

Director (Directing)

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John Trumper

Editor (Editing)

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Alun Falconer

Writer (Writing)

Don Chaffey

Additional Dialogue (Crew)

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William Kellner

Art Direction (Art)

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Philip Leakey

Makeup Artist (Costume & Make-Up)

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Ralph Bond

Executive In Charge Of Production (Production)

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'Freddie' Pearson

Production Manager (Production)

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Ronald Spencer

Assistant Director (Directing)

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Bill Salter

Sound Recordist (Sound)