Sherlock, Jr.

Sherlock Jr. 1924 is an American silent comedy film directed by and starring Buster Keaton and written by Clyde Bruckman, Jean Havez and Joseph A. Mitchell. It features Kathryn McGuire, Joe Keaton and Ward Crane.

A movie theater projectionist and janitor Buster Keaton is in love with a beautiful girl Kathryn McGuire. However, he has a rival, the local sheik Ward Crane. Neither has much money. The projectionist buys abox of chocolates, all he can afford, and changes the price tobefore giving it and a ring to her. The sheik steals and pawns the girls fathers pocket watch for 4. With the money, he buys abox of chocolates for the girl. When the father notices his watch is missing, the sheik slips the pawn ticket into the projectionists pocket unnoticed. The projectionist, studying to be a detective, offers to solve the crime, but when the pawn ticket is found, is banished from the girls home.While showing a film about the theft of a pearl necklace, he falls asleep and dreams that he enters the movie as a detective. The other actors are replaced by the projectionists real acquaintances. When he awakens, the girl shows up to tell him that she learned the identity of the real thief after going to the pawn shop to see who actually pawned the pocket watch. As a reconciliation is playing on the screen, he mimics the actors behavior. ........

Source: Wikipedia