Eric Portman
Paul Mangin
Edana Romney
Mifanwy
Barbara Mullen
Veronica
Hugh Sinclair
Owen Rhys
Bruce Belfrage
Sir David Conway
Joan Maude
Caroline Hart
Leslie Weston
Mortimer
Alan Wheatley
Edgar Orsen
Hugh Latimer
Bing
John Penrose
Brandy
Christopher Lee
Charles
Lois Maxwell
Lois
Mavis Villiers
Babs
Thora Hird
Visitor in Tussauds
Valentine Dyall
Counsel for the Defence (uncredited)
Susanne Gibbs
Gwendoline (uncredited)
Noel Howlett
Psychiatrist (uncredited)
Gordon McLeod
Public Prosecutor (uncredited)
Christopher Massie
Novel
Terence Young
Director
Rudolph Cartier
Producer
André Thomas
Director of Photography
Maggy Rouff
Seamstress
Rudolph Cartier
Screenplay
Edana Romney
Screenplay
Douglas Myers
Editor
J.S. Davie
Sound Recordist
Terence Verity
Art Direction
Georges Auric
Original Music Composer
Serge Piménoff
Production Design
Ann Besserman
Continuity
Gerry Fairbank
Makeup Supervisor
Owen Hyde-Clark
Costume Design
Nicolas Wilcke
Special Effects
Mancini
Hair Supervisor
Walter Limot
Still Photographer
Sam Lee
Production Manager