Twelve-year-old Theodore “Teddy” Roosevelt Fitzroy has murder on his hands and trouble on his tail. He believes that Henry, the hippopotamus at the brand-new FunJungle, has been murdered. The zoo’s top brass claim the hippo went belly up the natural way, but Teddy and his feisty friend...

Teddy Fitzroy’s back for another zoo mystery—this time it’s a koala caper—in this action-packed follow-up to Belly Up that School Library Journal called a “whopper of a whodunit that delivers plenty of suspects, action, slapstick, gross bodily functions, red herrings, and animal trivia...

The first book in the thrilling time travel adventure trilogy from New York Times bestselling Spy School author Stuart Gibbs—now with a brand-new look! Before they were legends, they were friends. All for one and one for all! On a family trip to Paris, Greg Rich's parents disappear. They're...

It’s a murder mystery on the moon in this humorous and suspenseful space adventure from the author of Belly Up and Spy School that The New York Times Book Review called “a delightful and brilliantly constructed middle grade thriller.” Like his fellow lunarnauts—otherwise known as...

Now with a reimagined look! Join a peasant boy who wants to be a knight in the laugh-out-loud funny, highly illustrated first book of the New York Times bestselling Once Upon a Tim chapter book series from Spy School author Stuart Gibbs. Tim is just a peasant, but he dreams big. He wants more...