Elenco - Serena
Patrick Holt
Inspector Gregory
Emrys Jones
Howard Rogers
Honor Blackman
Ann Rogers
Bruce Beeby
Det. Sgt Conway
John Horsley
Mr. FisherRobert Perceval
Bank Manager
Wally Patch
BarmanFrank Pettitt
Fred (as Frank Pettit)Benedicta Leigh
Policewoman Scott
Peter Glaze
Station Booking ClerkVi Stevens
LandladyHoward Greene
River Police SergeantRaymond Smith
River Police ConstableLawrence James
Uniformed ConstableReginald Hearne
Doctor (as Reggie Hearne)
Barry Linehan
Forensic Chemist
Gerry Duggan
Norman ColeColin Rix
Plain Clothes DetectiveBill Mills
PhotographerPat Shaw
Uniformed PolicewomanJohn Tatham
PC Barrow (uncredited)