Joseph and Helen Harper, who have spent their niece Blanche's inheritance, worry that Blanche's fiancé, wealthy George Graham, will no longer want her when he finds out that she has gone insane from grief after hearing a report of his death in the war. When George returns and learns of the situation, he hires detectives to investigate. The Harpers convince cabaret dancer Mazie Del Mar, who resembles Blanche, to impersonate her and marry George. Mazie, wanting to escape from cabaret owner Signor Enrico, called "The Hellion," who uses hypnosis to control her, agrees, but she falls in love with George and feels deceitful. After Enrico kidnaps Blanche, thinking she is Mazie, and unsuccessfuly tries to hypnotize her, they fight and Blanche is killed. George tells Mazie, about to confess, that his detectives told him who she was, but that he loves her anyway. He forgives the Harpers, since their scheme resulted in love for him and Mazie. -AFI