Returning home, Charles promises to leave town in a few days if she will help him. He forces Charlie to go into a bar and tells her that she knows nothing of the real world. She rushes out of the room when Joseph and his old friend, Herbie Hawkins, a mystery buff, discuss various forms of murder, and Charles chases after her. At dinner the next night, Charlie's suspicions are confirmed when Charles openly expresses his hatred of widows.

After Jack takes her home, Charlie rushes to the library, where she discovers that Charles had earlier destroyed her father's newspaper because it contained an article about the nationwide search for the 'Merry Widow Murderer.' She also learns that the third victim's name matches the engraved initials on the ring her uncle gave her. Jack tells her that Charles is one of two suspects, and Charlie agrees not to divulge his secret to her family. After spending the day with the Newtons, Jack takes Charlie on a date, and she learns that he is actually a police detective investigating her uncle. The next day, Emma tells Charles that a questionnaire man for a national poll named Jack Graham, along with photographer Fred Saunders, is conducting a survey of the Newton family, but Charles refuses to be interviewed or photographed. At dinner that night, Charles, who is viewed by the Newtons as a sophisticated adventurer, gives Charlie an emerald ring, and she begins to hum the 'Merry Widow' waltz, the same tune of which Charles had just been thinking. Charlie is especially elated by the arrival of her uncle, as she was named after him and the two have a seemingly telepathic relationship. At the train station, Charles is met by his brother-in-law Joseph, his young nephew Roger and his two nieces, Charlie and Ann. Charles escapes to his unsuspecting older sister Emma Newton's home in the small town of Santa Rosa, California. Serial murderer Charles Oakley is forced to flee Philadelphia when the police come to suspect him in the strangulations of three rich widows.

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