|The Winslow Boy is a 1948 film adaptation of Terence Rattigan's play. In Edwardian England, a thirteen year-old cadet, Ronnie Winslow, is expelled from the naval academy at Osborne for stealing a seven shilling postal order. His father and sister become obsessed with proving his innocence at any cost to themselves, and turn the case into a national cause celebre. It was directed by Anthony Asquith and the cinematography by Freddie Young. Starring Robert Donat, Sir Cedric Hardwicke, Margaret Leighton and Stanley Holloway.
The Winslow Boy (1948) http://www.imdb.com/title/tt0040970/