Mabel Jones returns home from boarding-school, filled with the idea that she is a born novelist and with a partially written manuscript upon a sociological subject, in which the hero is a burglar. Mabel's father is a sergeant of police and having heard in his past experience about all the dealings with burglars he cares for, he turns a deaf ear to her pleadings. Mabel persists in her determination and the sergeant is about to grow real angry when he sees a chance to cure her of her mad infatuation for underworld subjects. Among the sergeant's acquaintances is a young novelist named Jefferson Lang, who is also writing a novel and in which the heroine is a sneak thief. By clever planning and aided by the rest of the police boys, Mabel and Jeff are brought together, he believing her to be "Shifty Sadie," the sneak thief, and she knowing him as "Baffles," the gentleman burglar. Then follows a game of cross purposes and misunderstandings between the young couple, which culminates in them ...
Moving Picture World synopsis