When the hamsters in Ms. Weintraub's room start acting a little strange, everyone thinks the problem must be the alien vitamins that Pleskit has been feeding them. But even after Pleskit stops the vitamin treatments, the hamsters continue to get bigger -- and stronger -- and crankier. Clearly, something else is at work. But what? To answer that question, Tim and Pleskit will have to solve a mystery, track down an enemy, and defend themselves against a trio of the most dangerous hamsters the world has ever seen!
Bruce Coville has published more than one hundred books, which have sold more than sixteen million copies. Among his most popular titles are My Teacher Is an Alien, Into the Land of the Unicorns, and The Monster’s Ring. Bruce also founded Full Cast Audio, a company that creates recordings of the best in children’s and young adult literature. He lives in Syracuse, New York, with his wife, Katherine.