

The Long Arm
1956-06-01 · 96 min · ★ 7.0
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.
Trailers are previews, not full movies.
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Production details
- Directors
- Charles Frend
- Production companies
- Ealing Studios
- Countries
- United Kingdom
- Status
- Released
Top Cast
Jack HawkinsSupt Tom Halliday
John StrattonSergeant Ward
Dorothy AlisonMary Halliday
Sam KyddPolice Constable in Information Room
Glyn HoustonDetective Sergeant in 'Q' car
Richard LeechNightwatchman / Gilson
Geoffrey KeenChief Superintendent Jim Malcolm
Sydney TaflerStone
Peter BurtonCreasey
George RoseSlob
Arthur RigbyDetective Inspector at Chester
Ralph TrumanColonel Blenkinsop
Ian BannenThe Young Workman - Stanley James
Maureen DavisThe Young Workman's Wife - Mrs. James
Joss AmblerCashier at Shipping Office
Barry KeeganDetective Constable in Hospital Ward
Alec McCowenHouse SurgeonTitle information and images are supplied by TMDb. Explore our discovery guide for advice on comparing metadata and legal viewing options.
Where to watch
Availability provided by JustWatch via TMDb. Offers can change. Provider links are listed on TMDb; full playback requires a separately authorized source.
Seasons & episodes
Recommendations

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