
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

Nicholas Parsons
Police Constable Bates

John Welsh
House Agent at Shepperton

George Holdcroft

Dorothy Alison
Mary Halliday

Ian Bannen
The Young Workman - Stanley James

David Lodge
Detective at Car Lot (uncredited)

Meadows White

Sydney Tafler
Stone

Peter Burton
Creasey

Arthur Rigby
Detective Inspector at Chester

Joss Ambler
Cashier at Shipping Office

Pat Ryan

Harry Locke
Secondhand Dealer

Richard Davies
Detective (uncredited)

Ralph Truman
Colonel Blenkinsop

Glyn Houston
Detective Sergeant in 'Q' car

George Rose
Slob

Jameson Clark
Detective Superintendent Ogilvie

David Davies
Welsh Police Constable

Frazer Hines
Urchin (uncredited)

Roy Purcell

Jack McNaughton

Geoffrey Keen
Chief Superintendent Jim Malcolm

Barry Keegan
Detective Constable in Hospital Ward

Frederick Treves
Detective tailing Creasey (uncredited)

Meredith Edwards
Mr. Thomas

William Mervyn
Manager of Festival Hall

John Stratton
Sergeant Ward

Alec McCowen
House Surgeon

Maureen Delaney
Mrs. Stevens, the daily help

Robert Moor

Richard Leech
Nightwatchman / Gilson

Vincent Ball
P.C. at Hospital (uncredited)

Stratford Johns
Constable (uncredited)

Fred Davis

Sam Kydd
Police Constable in Information Room

Jack Hawkins
Supt Tom Halliday

Guy Standeven
Detective (uncredited)

Peter Welch
CID Man (uncredited)

Harold Goodwin
Official at Somerset House

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

Fred Griffiths

Martin Wyldeck
Officer in Criminal Records Department (uncredited)

John Paul