Ralph Stanning, a gentleman crook, is suspected of having stolen several famous gems from London's Kensington Museum. Scotland Yard assigns Inspector Reginald Culvert to the case, but the detective never marshals enough evidence against Standing to convict him. One day Standing rescues a woman named Marie who had jumped from the docks intending to kill herself. He then marries her and settles down in a small English village. He and his wife have a son, and the family is so happy that Standing forsakes his shady occupation to earn an honest living. After Lady Alice's pearls are stolen, Culvert lays a trap for Standing and is about to arrest him when the embarrassed woman reports that the jewels had merely fallen through a crack in the sofa. Chagrined, Culvert and his men finally agree to leave Standing in peace.