Cast

Richard Carlson

Dr. Jeffrey Stewart

King Donovan

Dr. Dan Forbes

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Leo Britt

Dr. Benton

Jean Byron

Connie Stewart

Harry Ellerbe

Dr. Allard

Frank Gerstle

Col. Willis

John Vosper

Capt. Dyer

Byron Foulger

Mr. Simon

Leonard Mudie

Howard Denker

Kathleen Freeman

Nelly

Crew

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Curt Siodmak

Director (Directing)

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Curt Siodmak

Screenplay (Writing)

Ivan Tors

Screenplay (Writing)

Herbert L. Strock

Supervising Editor (Editing)

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Harry Redmond Jr.

Special Effects (Crew)

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Jack R. Glass

Visual Effects (Visual Effects)

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Richard Dixon

Assistant Director (Directing)

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Maxwell O. Henry

Second Unit Director (Directing)

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George Van Marter

Art Direction (Art)

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Howard Fogetti

Sound (Sound)