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
Dr. Watson is angered that Holmes is not given any credit for it by the press. When Holmes refuses to record and publish his account of the adventure, Watson endeavours to do so himself. In time, Holmes and Watson become close friends. In "The Sign of the Four", John Watson becomes engaged to Mary Morstan, a governess. In "The Adventure of the Empty House", a reference by Watson to "my own sad bereavement" implies that Morstan has died by the time Holmes returns after faking his death; that fact is confirmed when Watson moves back to Baker Street to share lodgings with