Serena

Inspector Gregory

Howard Rogers

Ann Rogers

Det. Sgt Conway

Mr. Fisher

Bank Manager

Barman

Fred (as Frank Pettit)

Policewoman Scott

Station Booking Clerk

Landlady

River Police Sergeant

River Police Constable

Uniformed Constable

Doctor (as Reggie Hearne)

Forensic Chemist

Norman Cole

Plain Clothes Detective

Photographer

Uniformed Policewoman

PC Barrow (uncredited)