The Adventures of Quinn Higgins: Boy Detective--The Case of the Lost U-Boat

There is a new kid in Quinn's school by the name of Frederich Cullen. His parents are dead and he has come to Churchland to live with his grandfather on Big Flatty Creek. Quinn makes several attempts to include Frederick in his group of friends. When Frederich's grandfather, who goes by the name of Smith, won't let his grandson visit Quinn for a fishing trip, Quinn and his friends, Reggie, Vaughn and Demian, ask to come over to Big Flatty Creek. Quinn's friend Reggie becomes suspicious...
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There is a new kid in Quinn's school by the name of Frederich Cullen. His parents are dead and he has come to Churchland to live with his grandfather on Big Flatty Creek. Quinn makes several attempts to include Frederick in his group of friends. When Frederich's grandfather, who goes by the name of Smith, won't let his grandson visit Quinn for a fishing trip, Quinn and his friends, Reggie, Vaughn and Demian, ask to come over to Big Flatty Creek. Quinn's friend Reggie becomes suspicious when Frederich's grandfather not only refuses to let anyone come to visit his grandson and go fishing on his property, but is rude to them. "He's hiding something out there, " Reggie says, figuring the grandfather is making illegal whiskey. Is that the real reason he doesn't want them to play or to go fishing there? Or is he hiding another secret? A 65-year-old secret dating all the way back to World War II?