
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.
Director Charles Frend
Cast

Joss Ambler
Cashier at Shipping Office

Jack Hawkins
Supt Tom Halliday

Richard Leech
Nightwatchman / Gilson

Maureen Davis
The Young Workman's Wife - Mrs. James

Peter Welch
CID Man (uncredited)

Harold Goodwin
Official at Somerset House

Stratford Johns
Constable (uncredited)

Glyn Houston
Detective Sergeant in 'Q' car

John Welsh
House Agent at Shepperton

Martin Wyldeck
Officer in Criminal Records Department (uncredited)

George Holdcroft

Roy Purcell

Ian Bannen
The Young Workman - Stanley James

Barry Keegan
Detective Constable in Hospital Ward

Meredith Edwards
Mr. Thomas

John Paul

Pat Ryan

Meadows White

Frederick Treves
Detective tailing Creasey (uncredited)

Fred Griffiths

Sam Kydd
Police Constable in Information Room

Sydney Tafler
Stone

William Mervyn
Manager of Festival Hall

Vincent Ball
P.C. at Hospital (uncredited)

Peter Burton
Creasey

Dorothy Alison
Mary Halliday

Nicholas Parsons
Police Constable Bates

John Stratton
Sergeant Ward

David Lodge
Detective at Car Lot (uncredited)

Alec McCowen
House Surgeon

Harry Locke
Secondhand Dealer

George Rose
Slob

Richard Davies
Detective (uncredited)

Robert Moor

Arthur Rigby
Detective Inspector at Chester

Guy Standeven
Detective (uncredited)

David Davies
Welsh Police Constable

Jameson Clark
Detective Superintendent Ogilvie

Frazer Hines
Urchin (uncredited)

Geoffrey Keen
Chief Superintendent Jim Malcolm

Ralph Truman
Colonel Blenkinsop

Maureen Delaney
Mrs. Stevens, the daily help

Jack McNaughton