Susan Strasberg

Penny Appleby

Ronald Lewis

Robert

Ann Todd

Jane Appleby

Christopher Lee

Doctor Pierre Gerrard

John Serret

Inspector Legrand

Leonard Sachs

Mr. Spratt

Anne Blake

Marie the Maid

Fred Johnson

Father

Madame Lobegue

Swiss Air Hostess (uncredited)

Bernard Browne

Gendarme (uncredited)

Frederick Rawlings

Plainclothes Sergeant (uncredited)

Richard Klee

Plainclothes Sergeant (uncredited)

Brian Jackson

Plainclothes Officer (uncredited)

Heinz Bernard

Plainclothes Officer (uncredited)

Frederick Schrecker

Plainclothes Officer (uncredited)

Gordon Sterne

Policeman (uncredited)

Rodney Burke

Policeman (uncredited)

Clifton Parker

Original Music Composer

Jimmy Sangster

Writer

Michael Carreras

Executive Producer

Eric Boyd-Perkins

Editor

Douglas Slocombe

Director of Photography

Bernard Robinson

Production Design

Jimmy Sangster

Producer

Seth Holt

Director

Desmond Davis

Camera Operator

Eileen Bates

Hairstylist

Stuart Lyons

Casting

Thomas Goswell

Art Direction

Len Shilton

Sound Recordist

Basil Newall

Makeup Artist

Bill Constable

Assistant Art Director

Ian Scoones

Special Effects Assistant

Egil S. Woxholt

Underwater Camera

Terry Lens

Second Assistant Director

Len Harris

Additional Camera

Pamela Mann

Continuity

John Jordan

Underwater Camera

Dora Lloyd

Wardrobe Master

Jim Groom

Sound Editor

John Crome

Assistant Sound Editor

Harry Oakes

Additional Camera

David Tomblin

Assistant Director

George Higgins

Still Photographer

James Needs

Supervising Editor

John Crome

Assistant Editor

Ray Andrew

Clapper Loader

Les Bowie

Special Effects

William Hill

Production Manager

Teddy Mason

Sound Recordist

John Hollingsworth

Music Supervisor

Les Hammond

Sound Recordist