Mystery Crime Thriller
Scotland Yard detectives attempt to solve a spate of safe robberies across England beginning with clues found at the latest burglary in London. The film is notable for using a police procedural style made popular by Ealing in their 1950 film The Blue Lamp. It is known in the US as The Third Key.
Directed by
Charles Frend
Jack Hawkins
Supt Tom Halliday
Geoffrey Keen
Chief Superintendent Jim Malcolm
Ian Bannen
The Young Workman - Stanley James
John Welsh
House Agent at Shepperton
John Stratton
Sergeant Ward
Sydney Tafler
Stone
William Mervyn
Manager of Festival Hall
Glyn Houston
Detective Sergeant in 'Q' car
Vincent Ball
P.C. at Hospital (uncredited)
Frazer Hines
Urchin (uncredited)
Stratford Johns
Constable (uncredited)
Sam Kydd
Police Constable in Information Room
Alec McCowen
House Surgeon
George Rose
Slob
Guy Standeven
Detective (uncredited)
Richard Davies
Detective (uncredited)
Ursula Howells
Mrs. Elliot / Mrs. Gilson
David Lodge
Detective at Car Lot (uncredited)
Harry Locke
Secondhand Dealer
Ralph Truman
Colonel Blenkinsop
Richard Leech
Nightwatchman / Gilson
Martin Wyldeck
Officer in Criminal Records Department (uncredited)
Nicholas Parsons
Police Constable Bates
Meredith Edwards
Mr. Thomas
Dorothy Alison
Mary Halliday
John Warwick
Detective Inspector at Shipping Office
Joss Ambler
Cashier at Shipping Office
Peter Burton
Creasey
Jameson Clark
Detective Superintendent Ogilvie
Harold Goodwin
Official at Somerset House
Jack McNaughton
Maureen Delaney
Mrs. Stevens, the daily help
Arthur Rigby
Detective Inspector at Chester
Michael Brooke
Tony Halliday
Newton Blick
Deputy Commander
Maureen Davis
The Young Workman's Wife - Mrs. James
Barry Keegan
Detective Constable in Hospital Ward
Warwick Ashton
Newspaper Circulation Manager
David Davies
Welsh Police Constable
Julie Milton
Welsh Newsagent's Daughter
Gillian Webb
Housewife at Shepperton
Frederick Treves
Detective tailing Creasey (uncredited)
Peter Welch
CID Man (uncredited)
Dennis Carnell
Edward Cast
Michael Collins
Fred Davis
Jack Dearlove
Robert Gregory
Fred Griffiths
Patrick Halpin
Aidan Harrington
George Holdcroft
Lindsay Hooper
Arthur Howell
Colin McKenzie
Robert Moor
Fred Nicholas
John Paul
Roy Purcell
Charles Rayford
Anthony Richmond
Pat Ryan
Philip Stewart
Meadows White
John Wilder
Sonnie Wills

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