Title: Case of the topsy-turvy toy
Description: 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.
Subjects: Brothers and sisters, Literary recreations, Fiction, Puzzles, Toys, Swindlers and swindling, Contests, Mystery and detective stories, Juvenile fiction, Siblings, Children's fiction, Contests, fiction, Toys, fiction, Siblings, fiction