On screen
Cast
21 credited performers
Patrick Holt
Inspector Gregory
Emrys Jones
Howard Rogers
Honor Blackman
Ann Rogers
Bruce Beeby
Det. Sgt Conway
John Horsley
Mr. Fisher
Artwork unavailable
Robert Perceval
Bank Manager
Wally Patch
Barman
Artwork unavailable
Frank Pettitt
Fred
Artwork unavailable
Benedicta Leigh
Policewoman Scott
Peter Glaze
Station Booking Clerk
Artwork unavailable
Vi Stevens
Landlady
Artwork unavailable
Howard Greene
River Police Sergeant
Artwork unavailable
Raymond Smith
River Police Constable
Artwork unavailable
Lawrence James
Uniformed Constable
Reginald Hearne
Doctor (as Reggie Hearne)
Barry Linehan
Forensic Chemist
Gerry Duggan
Norman Cole
Artwork unavailable
Colin Rix
Plain Clothes Detective
Artwork unavailable
Bill Mills
Photographer
Artwork unavailable
Pat Shaw
Uniformed Policewoman
Artwork unavailable
John Tatham
PC Barrow (uncredited)