Cast (23)

Marshall Thompson

Major Jeff Cummings

Kynaston Reeves

Prof. R. E. Walgate

Kim Parker

Barbara Griselle

Stanley Maxted

Col. Butler

Terry Kilburn

Capt. Al Chester

James Dyrenforth

Mayor Hawkins

Robert MacKenzie

Const. Howard Gibbons

Peter Madden

Dr. Bradley

Gil Winfield

Dr. Warren

Michael Balfour

Sgt. Kasper

Launce Maraschal

Melville

Meadows White

Ben Adams

E. Kerrigan Prescott

Atomic Engineer

Lala Lloyd

Amelia Adams

Shane Cordell

Nurse

Sheldon Allan

Sentry (uncredited)

Alexander Archdale

Minister (uncredited)

Eddie Boyce

Jacques Griselle (uncredited)

Victor Hagan

Villager (uncredited)

Victor Harrington

Villager (uncredited)

Jack Hetherington

Sergeant in Office (uncredited)

Richard Neller

Townsman (uncredited)

Tom Watson

Technical Sergeant (uncredited)

Crew (25)

Arthur Crabtree

Director

Herbert J. Leder

Screenplay

Amelia Reynolds Long

Story

Richard Gordon

Executive Producer

Ronald Kinnoch

Production Manager

Ronald Kinnoch

Co-Producer

Charles F. Vetter

Executive Producer

Barbara Barnard

Hairstylist

Douglas Hickox

Assistant Director

Jim Hydes

Makeup Artist

Buxton Orr

Original Music Composer

Richard Q. McNaughton

Editor

Lionel Banes

Director of Photography

John Elphick

Set Designer

John Croydon

Producer

Peter Neilson

Special Effects

Flo Nordhoff

Special Effects

Leo Rogers

Camera Operator

Hazel Swift

Continuity

Anna Duse

Costume Supervisor

Terry Poulton

Sound Editor

Karl-Ludwig Ruppel

Special Effects

Frederic Lewis

Conductor

Peter T. Davies

Sound Recordist

Martin Curtis

Second Unit Director of Photography