On screen
Cast
67 credited performers
Jack Hawkins
Supt Tom Halliday
John Stratton
Sergeant Ward
Dorothy Alison
Mary Halliday
Michael Brooke
Tony Halliday
Sam Kydd
Police Constable in Information Room
Glyn Houston
Detective Sergeant in 'Q' car
Richard Leech
Nightwatchman / Gilson
Newton Blick
Deputy Commander
Geoffrey Keen
Chief Superintendent Jim Malcolm
Sydney Tafler
Stone
Peter Burton
Creasey
George Rose
Slob
Arthur Rigby
Detective Inspector at Chester
Ralph Truman
Colonel Blenkinsop
Ian Bannen
The Young Workman - Stanley James
Maureen Davis
The Young Workman's Wife - Mrs. James
John Warwick
Detective Inspector at Shipping Office
Joss Ambler
Cashier at Shipping Office
Barry Keegan
Detective Constable in Hospital Ward
Alec McCowen
House Surgeon
Harry Locke
Secondhand Dealer
Nicholas Parsons
Police Constable Bates
Warwick Ashton
Newspaper Circulation Manager
Ursula Howells
Mrs. Elliot / Mrs. Gilson
David Davies
Welsh Police Constable
Julie Milton
Welsh Newsagent's Daughter
Meredith Edwards
Mr. Thomas
Harold Goodwin
Official at Somerset House
John Welsh
House Agent at Shepperton
Gillian Webb
Housewife at Shepperton
Maureen Delaney
Mrs. Stevens, the daily help
Jameson Clark
Detective Superintendent Ogilvie
William Mervyn
Manager of Festival Hall
Vincent Ball
P.C. at Hospital (uncredited)
Richard Davies
Detective (uncredited)
Frazer Hines
Urchin (uncredited)
Stratford Johns
Constable (uncredited)
David Lodge
Detective at Car Lot (uncredited)
Guy Standeven
Detective (uncredited)
Frederick Treves
Detective tailing Creasey (uncredited)
Peter Welch
CID Man (uncredited)
Martin Wyldeck
Officer in Criminal Records Department (uncredited)
Dennis Carnell
Character not listed
Edward Cast
Character not listed
Michael Collins
Character not listed
Fred Davis
Character not listed
Jack Dearlove
Character not listed
Robert Gregory
Character not listed
Fred Griffiths
Character not listed
Patrick Halpin
Character not listed
Aidan Harrington
Character not listed
George Holdcroft
Character not listed
Lindsay Hooper
Character not listed
Arthur Howell
Character not listed
Colin McKenzie
Character not listed
Jack McNaughton
Character not listed
Robert Moor
Character not listed
Fred Nicholas
Character not listed
John Paul
Character not listed
Roy Purcell
Character not listed
Charles Rayford
Character not listed
Anthony Richmond
Character not listed
Pat Ryan
Character not listed
Philip Stewart
Character not listed
Meadows White
Character not listed
John Wilder
Detective (uncredited)
Sonnie Wills
Character not listed