Rex Harrison is walking in the park after a losing day at the track. He falls into conversation with a young woman sitting on a bench. She hands him a card for her business and Harrison begins to walk off, when a police detective comes up to arrest her for solicitation. Harrison protests. The detective tells him to scarper off. Harrison protests some more and the 'tec takes a swing at him. They tussle and the policeman splatters his head on the bench's ironmongery.
Found guilty of manslaughter, Harrison is sent to Dartmoor. He escapes, is pursued by the police in the form of Inspector William Hartnell, and succored by Peggy Cummins.
It's a remake of the 1930 movie that was the first production of what became Ealing Studios, directed by Joseph Mankiewicz, with John Galsworthy's original script updated by Philip Dunne -- lots more sexual tension between Harrison and Cummins than in the original script. It's certainly a competent remake, and purists will be pleased that the outdoor scenes were shot in Dartmoor; the original used Northamptonshire. Yet I am always confronted by the question of how it is that it's always the good-looking people who are morally superior, and who are believed to be honest. Frederick Piper, who plays the convict to whom Harrison confides his intention to escape.... had he been the one who did so, would Miss Cummins have helped him?