The Adventure of the Cheerful Four both the puppets of Jonathan Small and Arthur Morstan have the atmosphere of the members of a famous British musical band. One night Arthur Morstan, a pupil of Archer House is attacked and gets injured. His younger sister Mary Morstan requests Sherlock Holmes to solve why his brother is attacked while John H. Watson falls in love with her. They began searching Arthur's room with the help of Abdullah, roommate of Arthur. Holmes suspects that the offeder stole into the room from skylight and he and Mary find small handprints around it on the roof. Watson tries to get up
The Sign of Four (1932 film) and track down the gang who are threatening Miss Morstan. They soon discover that Small and his accomplices are waiting to take the necklace from Mary Morstan to complete their haul and then flee the country and are hiding out in a circus. Watson unwisely takes Mary to investigate, and she is forcibly taken by them. Small's gang plan to make their escape by boat up the River Thames, but they are pursued by Holmes and Watson. The film climaxes in a shoot-out at a deserted warehouse. The Sign of Four (1932 film) The Sign of Four is a 1932