Full Credits
21 members

Patrick Holt
Inspector Gregory

Emrys Jones
Howard Rogers

Honor Blackman
Ann Rogers
Bruce Beeby
Det. Sgt Conway

John Horsley
Mr. Fisher
Robert Perceval
Bank Manager

Wally Patch
Barman
Frank Pettitt
Fred (as Frank Pettit)
Benedicta Leigh
Policewoman Scott

Peter Glaze
Station Booking Clerk
Vi Stevens
Landlady
Howard Greene
River Police Sergeant
Raymond Smith
River Police Constable
Lawrence James
Uniformed Constable
Reginald Hearne
Doctor (as Reggie Hearne)

Barry Linehan
Forensic Chemist

Gerry Duggan
Norman Cole
Colin Rix
Plain Clothes Detective
Bill Mills
Photographer
Pat Shaw
Uniformed Policewoman
John Tatham
PC Barrow (uncredited)
24 members
David Bracknell
Assistant Director
James Northcote
Second Assistant Director
Peter Maxwell
Director
Pat Moon
Continuity
Edward Abraham
Story
Valerie Abraham
Story
Reginald Hearne
Screenplay
Edward Abraham
Screenplay
Ronald Liles
Associate Producer
John I. Phillips
Producer
Stephen Dade
Director of Photography
Gus Drisse
Camera Operator
Frank Bellingham
Still Photographer
Johnny Gregory
Music
Richard Bird
Sound Recordist
Johnny Gregory
Music Director
Ken Ritchie
Boom Operator
George Provis
Art Direction
Peter Childs
Assistant Art Director
Jimmy Evans
Makeup Artist
Bobbie Smith
Hairstylist
Joyce Stoneman
Wardrobe Assistant
Allan Morrison
Editor
Wally Nelson
Assistant Editor