Dink, Josh and Ruth Rose are very excited about their older friend Jud coming to visit. Even better is the surprise he brings with him—a full-size mechancial T-Rex. Jud and his friends have been exhibiting the T-Rex as advertisement for their Dinosaur museum, and the fee they charge for their show is going to fund the museum's future opening. But when the money collected goes missing, the thief must be found with the help of the trio and the police. The story is cleverly pieced together, but the reader has to be on the lookout for clues to solve the mystery. Overall an excellent book, but geared toward younger readers of the 6 to 10 age group. One in the "A to Z Mysteries" series. 2003, Random House Inc, Ages 6 to 10.