In "The Fake Heir" Nancy, along with Bess and George, find the wreck of an old yacht with a safe inside full of jewelry worth a small fortune. Cousins of the Druthers, who are clients of Nancy's dad Carson Drew, owned the yacht. Their will leaves everything to Mr. Druthers, specifically excluding his spouse, (whom the cousins hated), but no one's seen him for ten years and the rumor is that Mrs. Druthers murdered him! Things take a surprising turn when suddenly Mr. Druthers reappears! But then Mrs. Druthers disappears! Join Nancy Drew as she solves the mystery of the fake heir! Then, in "Mr Cheeters is Missing" when the eccentric Blanche Porter reports that her beloved Mr. Cheeters has vanished, it isn't your standard missing persons case. As Nancy Drew soon discovers, Mr. Cheeters, is a pet chimp. Or is he? Based on a preliminary investigation and information obtained from Blanche's brother, Lawrence, the River Heights police dismiss the case as bogus - doubting that thereever was a Mr. Cheeters to begin with. But when Nancy Drew discovers there's a missing diamond necklace as well - she's on the case!