Richard Carlson

Dr. Jeffrey Stewart

King Donovan

Dr. Dan Forbes

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

캐슬린 프리먼

Nelly

William Benedict

Albert

John Zaremba

Chief Watson

Douglas Evans

Pilot

Strother Martin

Co-Pilot

Michael Fox

Dr. Serny

Watson Downs

Mayor

Lee Phelps

City Engineer

Roy Engel

Gen. Behan

John Dodsworth

Dr. Carthwright

Charles Williams

Cabbie

Michael Granger

Kenneth Smith

Jarma Lewis

Stewardess

Elizabeth Root

Joy

Juney Ellis

Spinster

Curt Siodmak

Director

Curt Siodmak

Screenplay

Ivan Tors

Screenplay

Richard Dixon

Assistant Director

George Van Marter

Art Direction

Maxwell O. Henry

Second Unit Director

Herbert L. Strock

Supervising Editor

Jack R. Glass

Visual Effects

Harry Redmond Jr.

Special Effects

Howard Fogetti

Sound

Ivan Tors

Producer

Paul Beaver

Original Music Composer

George Van Marter

Production Design

Charles Van Enger

Director of Photography

George Van Marter

Associate Producer

Herbert L. Strock

Director

Victor A. Gangelin

Set Decoration

Blaine Sanford

Original Music Composer

Bill Naylor

Sound Effects

Ivan Tors Productions