Le Comte de Monte-Cristo

Edmond Dantes is falsely accused by those jealous of his good fortune, and is sentenced to spend the rest of his life in the notorious island prison, Chateau d'If. While imprisoned, he meets the Abbe Faria, a fellow prisoner whom everyone believes to be mad. The Abbe tells Edmond of a fantastic treasure hidden away on a tiny island, that only he knows the location of. After many years in prison, the old Abbe dies, and Edmond escapes disguised as the dead body. (imdb)