Full Credits
40 members

Nigel Patrick
Chief Insp. John Edward Johnnoe

Katherine Woodville
Mary Johnnoe

Colin Blakely
Charlie Ruskin

Derren Nesbitt
Bertie Hoyle

Harry Andrews
Supt. Alec Bestwick

Roy Kinnear
Shorty
Margaret Whiting
Maisie Barton
John Cowley
Jim Ruskin

Allan Cuthbertson
Smythe

Frank Finlay
Leon Sale

Michael Coles
Ben

Ronald Hines
Geoff Lewis
Peter Prowse
Mick Lonergan

George Sewell
Fred Hill

Kenneth J. Warren
Lou Waites

Brian Wilde
Lipson

Peter Bowles
Peter The Pole (uncredited)

Donal Donnelly
Tommy The Trotter (uncredited)

Harry Landis
Hicks (uncredited)
Bernard Goldman
Hymie (uncredited)

Fred Haggerty
Hoyle's Henchman (uncredited)
Peter Brace
Ruskin's Henchman (uncredited)
George Hilsdon
Ruskin's Henchman (uncredited)
Faye Craig
Black Woman (uncredited)
Geoffrey Dunn
Man with Camera (uncredited)

Garfield Morgan
Police Inspector (uncredited)
Geoffrey Denton
Police Inspector (uncredited)

Patrick Jordan
Police Inspector (uncredited)

Ray Smith
Police Sergeant (uncredited)
Donald Tandy
Police Sergeant (uncredited)

Martin Wyldeck
Police Officer (uncredited)
William Baskiville
Police Officer (uncredited)
Arthur Howell
Police Officer (uncredited)
Alan Meacham
Police Officer (uncredited)
Colin McKenzie
Detective (uncredited)
Joe Wadham
Police Driver (uncredited)

David Weston
Young Constable (uncredited)

Michael Segal
Customer at Club (uncredited)
Roy Godfrey
Barman (uncredited)
Peter Evans
Pub customer (uncredited)
18 members
Ken Annakin
Director
Douglas Warner
Novel
Alun Falconer
Writer
Paul Durst
Writer
William MacQuitty
Producer
Dudley Lovell
Camera Operator
Reginald H. Wyer
Director of Photography
Wally Fairweather
Focus Puller
Don Sharpe
Sound Editor
Clifton Parker
Music
C. Le Mesurier
Sound Recordist
Dudley Messenger
Sound Recordist
Alex Vetchinsky
Art Direction
Terry Knight
Draughtsman
Yvonne Caffin
Costume Design
Geoffrey Rodway
Makeup Artist
Iris Tilley
Hairstylist
Alfred Roome
Editor