Dennis Price as Inspector Peter Lawton

Peggy Evans as Joan Lawton

Rex Garner as Sgt. Bill Todd

Philip Saville as Edward "Teddy" King / Jim King

Greta Mayaro as Lena

Arnold Bell as McMann

Leonard Sharp as Old Skip

Nora Gordon as Nanna

Renee Goddard as Lady Branstead

Arthur Lovegrove as Inspector Cobb

Daphne Maddox as Victim

Robert Weeden as Constable

Eddie Boyce as Police Constable (uncredited)

John Davis as Transmitting Constable (uncredited)

Victor Harrington as Jewel Box Nightclub Patron (uncredited)