Inspector Gregory
Patrick Holt
Howard Rogers
Emrys Jones
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
Ann Rogers
Honor Blackman
PC Barrow (uncredited)
John Tatham
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
Story
Edward Abraham
Valerie Abraham
Screenplay
Associate Producer
Ronald Liles
Producer
John I. Phillips
Music
Johnny Gregory
Director of Photography
Stephen Dade
Editor
Allan Morrison
Art Direction
George Provis
Makeup Artist
Jimmy Evans
Hairstylist
Bobbie Smith
Assistant Director
David Bracknell
Second Assistant Director
James Northcote
Assistant Art Director
Peter Childs
Sound Recordist
Richard Bird
Camera Operator
Gus Drisse
Still Photographer
Frank Bellingham
Wardrobe Assistant
Joyce Stoneman
Assistant Editor
Wally Nelson
Music Director
Director
Peter Maxwell
Boom Operator
Ken Ritchie
Continuity
Pat Moon