Scotland Yard investigate when a woman, apparently the estranged wife of a London painter, is murdered with a shotgun in rural Surrey at the same time as the artist's striking model with her long black hair disappears.
Inspector Gregory
Patrick Holt
Howard Rogers
Emrys Jones
Ann Rogers
Honor Blackman
Det. Sgt Conway
Bruce Beeby
Mr. Fisher
John Horsley
Bank Manager
Robert Perceval
Barman
Wally Patch
Fred (as Frank Pettit)
Frank Pettitt
Policewoman Scott
Benedicta Leigh
Station Booking Clerk
Peter Glaze
Landlady
Vi Stevens
River Police Sergeant
Howard Greene
River Police Constable
Raymond Smith
Uniformed Constable
Lawrence James
Doctor (as Reggie Hearne)
Reginald Hearne
Forensic Chemist
Barry Linehan
Norman Cole
Gerry Duggan
Plain Clothes Detective
Colin Rix
Photographer
Bill Mills
Uniformed Policewoman
Pat Shaw
PC Barrow (uncredited)
John Tatham