MOVIE
The Long Arm
MysteryCrimeThriller
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.
Top cast
Jack HawkinsSupt Tom Halliday
John StrattonSergeant Ward
Dorothy AlisonMary Halliday- Michael BrookeTony Halliday
Sam KyddPolice Constable in Information Room
Glyn HoustonDetective Sergeant in 'Q' car
Richard LeechNightwatchman / Gilson- Newton BlickDeputy Commander
Geoffrey KeenChief Superintendent Jim Malcolm
Sydney TaflerStone
Peter BurtonCreasey
George RoseSlob
Where to watch
Netflix
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TOD
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Not currently available on the supported providers in EG.
Availability can change as licenses rotate — confirm on the provider’s page before subscribing. Last checked: 13 Jul 2026.