The Secret

Sam Wanamaker

Nick Delaney

Mandy Miller

Katie Martin

André Morell

Chief Inspector Blake

Marian Spencer

Aunt Doris Porter

Jan Miller

Margaret O'Neill

Richard O'Sullivan

John Martin

Wyndham Goldie

Doctor Scott

Henry Caine

Superintendent

Aimée Delamain

Miss Lyons

John Miller

Toy Shop Assistant

Harold Berens

Frank Farmer

Jack Asher

Director of Photography

Scott MacGregor

Art Direction

Jack Slade

Editor

Benjamin Fisz

Producer

Cy Endfield

Director, Screenplay

Douglas Hickox

Assistant Director

Robert Brenon

Story

Phil Cardew

Original Music Composer