Supt Tom Halliday
Sergeant Ward
Mary Halliday
Tony Halliday
Police Constable in Information Room
Detective Sergeant in 'Q' car
Nightwatchman / Gilson
Deputy Commander
Chief Superintendent Jim Malcolm
Stone
Creasey
Slob
Detective Inspector at Chester
Colonel Blenkinsop
The Young Workman - Stanley James
The Young Workman's Wife - Mrs. James
Detective Inspector at Shipping Office
Cashier at Shipping Office
Detective Constable in Hospital Ward
House Surgeon
Secondhand Dealer
Police Constable Bates
Newspaper Circulation Manager
Mrs. Elliot / Mrs. Gilson
Welsh Police Constable
Welsh Newsagent's Daughter
Mr. Thomas
Official at Somerset House
House Agent at Shepperton
Housewife at Shepperton
Mrs. Stevens, the daily help
Detective Superintendent Ogilvie
Manager of Festival Hall
P.C. at Hospital (uncredited)
Detective (uncredited)
Urchin (uncredited)
Constable (uncredited)
Detective at Car Lot (uncredited)
Detective tailing Creasey (uncredited)
CID Man (uncredited)
Officer in Criminal Records Department (uncredited)
