On screen
Cast
20 credited performers
Boris Karloff
Colonel March
Ewan Roberts
Inspector Ames
Joan Sims
Marjorie Dawson
Richard Wattis
Cabot
Sheila Burrell
Joan Forsythe
Anthony Forwood
Jim Hartley
Ronald Leigh-Hunt
Ireton Bowlder
Patricia Owens
Betty Hartley
John Hewer
John Parrish
Roger Maxwell
Maj. Rodman
Artwork unavailable
Bernard Rebel
The Count
Dana Wynter
Francine Rapport
Marianne Stone
Customer in Bank (uncredited)
Peter Butterworth
Bank Clerk (uncredited)
Artwork unavailable
Sonya Hana
Paula
Artwork unavailable
Nita Valerie
Librarian
Cy Endfield
Man leaving British Museum library (uncredited)
Artwork unavailable
Pat Hagan
Police Constable at Bank (uncredited)
Artwork unavailable
Victor Harrington
Customer in Bank (uncredited)
Artwork unavailable
Charles Saynor
Police Constable (uncredited)