Edmund Lowe
— Inspector Barrabal
Sebastian Shaw
— Frank Sutton
Ann Todd
— Carol Stedman
Tamara Desni
— Tamara
Robert Newton
— Larry Graeme
Allan Jeayes
— Inspector Elford
Alastair Sim
— Joshua Collie
Stewart Rome
— Police Superintendent Marshall
Mabel Terry-Lewis
— Mrs. Stedman
Gordon McLeod
— Mr. Field
Syd Crossley
— Minor Role
Alf Goddard
— Police Sgt. Hawkins
Danny Green
— Safecracker
Fred Groves
— Martin
Michael Rennie
— Medical Examiner
Bill Shine
— Alfie
Ben Williams
— Dale
Philip Ray
— Safecracker (uncredited)
Noel Dainton
— Police Inspector (uncredited)