Cast
David Lodge
Detective at Car Lot (uncredited)
Fred Griffiths
Meadows White
Stratford Johns
Constable (uncredited)
Joss Ambler
Cashier at Shipping Office
Alec McCowen
House Surgeon
Meredith Edwards
Mr. Thomas
Vincent Ball
P.C. at Hospital (uncredited)
Jameson Clark
Detective Superintendent Ogilvie
Peter Welch
CID Man (uncredited)
Sam Kydd
Police Constable in Information Room
Glyn Houston
Detective Sergeant in 'Q' car
George Rose
Slob
David Davies
Welsh Police Constable
Harold Goodwin
Official at Somerset House
Frazer Hines
Urchin (uncredited)
William Mervyn
Manager of Festival Hall
Robert Moor
Dorothy Alison
Mary Halliday
Nicholas Parsons
Police Constable Bates
Martin Wyldeck
Officer in Criminal Records Department (uncredited)
Jack McNaughton
Geoffrey Keen
Chief Superintendent Jim Malcolm
Harry Locke
Secondhand Dealer
John Welsh
House Agent at Shepperton
Richard Davies
Detective (uncredited)
George Holdcroft
Roy Purcell
Barry Keegan
Detective Constable in Hospital Ward
Sydney Tafler
Stone
Arthur Rigby
Detective Inspector at Chester
Ralph Truman
Colonel Blenkinsop
Maureen Davis
The Young Workman's Wife - Mrs. James
Guy Standeven
Detective (uncredited)
Richard Leech
Nightwatchman / Gilson
John Stratton
Sergeant Ward
Frederick Treves
Detective tailing Creasey (uncredited)
Jack Hawkins
Supt Tom Halliday
Maureen Delaney
Mrs. Stevens, the daily help
Peter Burton
Creasey
Ian Bannen
The Young Workman - Stanley James
John Paul
Pat Ryan