The Long Arm

The True Inside Story of Scotland Yard's Crime Busters!

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.

Mystery Crime Thriller

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

Peter Burton

George Rose

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

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

Edward Cast

Michael Collins

Fred Davis

Jack Dearlove

Robert Gregory

Fred Griffiths

Patrick Halpin

Aidan Harrington

George Holdcroft

Lindsay Hooper

Arthur Howell

Colin McKenzie

Jack McNaughton

Robert Moor

Fred Nicholas

John Paul

Roy Purcell

Charles Rayford

Anthony Richmond

Pat Ryan

Philip Stewart

Meadows White

John Wilder

Sonnie Wills