Wikipedia
Moonfleet is a tale of smuggling by the English novelist J. Meade Falkner, first published in 1898. The book was extremely popular among children worldwide up until the 1970s, mostly for its themes of adventure and gripping storyline. It remains a popular story widely read and is still sometimes studied in schools.
Moonfleet is a 1955 Eastman Color film filmed in CinemaScope directed by Fritz Lang which was inspired by the novel Moonfleet by J. Meade Falkner, although significant alterations were made in the characters and plot.
A gothic melodrama set in England during the eighteenth century, the film is about John Mohune, a young orphan, played by Jon Whiteley, who is sent to the Dorset village of Moonfleet to stay with his mother's former lover, Jeremy Fox. Fox, played by Stewart Granger, is a morally ambiguous character, an elegant gentleman intimately involved with smugglers. On the run from the law, Mohune and Fox must decipher a coded message in their pursuit of a fabulous diamond hidden long ago.