The Great Sinner

The Great Sinner is a 1949 American drama film directed by Robert Siodmak. Based on the 1866 short novel The Gambler written by Fyodor Dostoyevsky, the film stars Gregory Peck, Ava Gardner, Frank Morgan, Ethel Barrymore, Walter Huston, Agnes Moorehead and Melvyn Douglas.

One of them is Aristide Pitard, an old thief who steals Fedyas money. Taking pity on the man, Fedya offers Aristide money to leave the city. Instead, Aristide uses the money to gamble and he eventually shoots himself in desperation. Before dying, he gives Fedya a pawn ticket and asks him to redeem it and return the article to its owner. However, he dies before divulging the name of this person. When Fedya goes to the pawnshop he discovers that the pledged item is a religious medal, and later finds out that it belongs to Pauline. Meanwhile, he has fallen deeply in love with her, despite her fathers discouragement of a romantic involvement with her.After returning the medal, Fedya finds out Pauline is pledged to an arranged marriage with Armand de Glasse, the wealthy but ruthless manager of the casino. Aware that Pauline is not engaged to Armand out of love, but as a payment for her fathers big debts to the casino, Fedya decides to start gambling himself to earn enough money to pay off the Generals debts. He initially earns a lot of money at roulette and becomes an gambling addict himself. However, after a period of fame for his winning streak, his luck runs out and he loses all of his money at the casino. ........

Source: Wikipedia