Case of the topsy-turvy toy [eBook - NC Kids Digital Library] : Pete and Penny's Pizza Puzzles Series, Book 2

In this case, Pete and Penny help two toy shop owners who receive a mysterious letter in the mail. Someone may be sabotaging a big toy contest in town . . . Pete and Penny need to follow clues and solve puzzles to uncover who before it's too late! Nine-year-old Pete and eleven-year-old Penny Pizzarelli help their friends, toy shop owners Rupert and Eliott Jest, solve puzzles as part of a contest at the annual toy fair, but someone is trying to stop them