Cast
Boris Karloff
Colonel March
Dana Wynter
Francine Rapport
Ewan Roberts
Inspector Ames
Joan Sims
Marjorie Dawson
Sheila Burrell
Joan Forsythe
Anthony Forwood
Jim Hartley
John Hewer
John Parrish
Roger Maxwell
Maj. Rodman
Cy Endfield
Man leaving British Museum library (uncredited)
Patricia Owens
Betty Hartley
Marianne Stone
Customer in Bank (uncredited)
Peter Butterworth
Bank Clerk (uncredited)
Richard Wattis
Cabot
Ronald Leigh-Hunt
Ireton Bowlder