Inspector Hanaud

Oskar Homolka

Jim Frobisher

Robert Urquhart

Betty Harlowe

Yvonne Furneaux

Ann Upcott

Josephine Griffin

Boris Wabersky

Harold Kasket

Nurse

Ruth Lodge

Detective Maurice Thevenet

Pierre Lefevre

Detective Moreau

Pierre Chaminade

Police Commissaire Giradot

Jacques Cey

Lawyer Jarrett

Anthony Nicholls

Director of Photography

Erwin Hillier

Director

Michael Anderson

Novel

A.E.W. Mason

Writer

Edward Dryhurst

Casting

Robert Lennard

Hairstylist

Polly Young

Production Design

Terence Verity

Editor

Edward B. Jarvis

Producer

Vaughan N. Dean

Music

Gerald Crossman

Makeup Artist

Eric Aylott

Script Supervisor

Thelma Orr

Sound Recordist

Les Hammond