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