A thief is on the prowl at Camp Dakota! The campers can't find their favorite things—and they're starting to accuse each other of stealing. The kids set out to find the culprit—but the truth behind the missing stuff may be stranger than anyone expected. Can the campers track down the Cabin Thief? Or will they turn on each other first? Look in the back of the book for experiments and more to help you become a science detective too!