A.J. doesn’t know who to fear more—the dinosaurs or Ms. Krup—during a sleepover in the natural history museum.
Something weird is going on!
A.J. thinks that nothing can possibly be as boring as a sleepover in the natural history museum. But anything can happen when Ms. Krup is in charge. The tour guide says that dinosaur skeletons come to life in the middle of the night. Is she right?