Cast

Hugh Marlowe

Dr. Russell A. Marvin

Joan Taylor

Carol Marvin

Donald Curtis

Maj. Huglin

Morris Ankrum

Brig. Gen. John Hanley

Thomas Browne Henry

Vice Adm. Enright

Grandon Rhodes

Gen. Edmunds

John Zaremba

Prof. Kanter

Paul Frees

Alien (voice)

Frank Wilcox

Alfred Cassidy

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Sydney Mason

Frank the garage man

Crew

Fred F. Sears

Director (Directing)

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Donald E. Keyhoe

Novel (Writing)

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Curt Siodmak

Screenstory (Writing)

George Worthing Yates

Screenplay (Writing)

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Bernard Gordon

Screenplay (Writing)

Ray Harryhausen

Visual Effects (Visual Effects)

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Fred Jackman Jr.

Director of Photography (Camera)

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Paul Palmentola

Art Direction (Art)

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Danny B. Landres

Editor (Editing)

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Sidney Clifford

Set Decoration (Art)