Eva Neal and her ex-husband, who came to her bedroom at night without an invitation, witness the bloody murder that took place in the villa opposite. But Eva cannot inform the police about this, since she is engaged to the son of the murdered and now her honest name is threatened with shame ("Emperor's Snuffbox"). M.D. David Garth's fiancée is accused of the crime. Garth does not believe this and, having conducted his own investigation, goes on the trail of real criminals ("Witch of the Tide").