A police detective suspects that his sister's boyfriend is a murderer.
as Inspector Peter Lawton
as Joan Lawton
as Sgt. Bill Todd
as Edward "Teddy" King / Jim King
as Lena
as McMann
as Old Skip
as Nanna
as Lady Branstead
as Inspector Cobb
as Victim
as Constable
as Police Constable (uncredited)
as Transmitting Constable (uncredited)
as Jewel Box Nightclub Patron (uncredited)
