When a former member of NERDS turns into a villainous cheerleader, Matilda "Wheezer" Choi and the rest of the NERDS must infiltrate the cheerleader squad and save the world from a machine that wreaks havoc by entering other dimensions.

"Beatrice Bly isn't just a spy. She's a super spy. She knows all the rules. She sneaks. She observes. She follows the clues to find the culprit. But when the class hamster, Edgar, goes missing, will Beatrice's spy training be enough to find out what happened?"--Inside front dust jacket.

"The nefarious leader of the Ring of Five, Ambrose Longford, is still determined to control both the Upper World and Lower World. But Danny and his friends at Wilson's school for spies stand in his way. As Danny struggles with his role in the spy world, Longford is attempting to bring down the other members of the Ring, to usurp all of its power. Or is he?"--

Jack, Red, and Anansi rescue a lost troll child that was captured as a spy, but what they find out when they return it to Troll Mountain changes everything they have ever known.

CHERUB agents are highly trained, extremely talented and all under the age of seventeen. For official purposes, these agents do not exist. They are sent out on missions to spy on terrorists, hack into crucial documents, and gather intel on global threats all without gadgets or weapons. It is an extremely dangerous job, but these agents have one crucial advantage: Adults never suspect that teens are spying on them. James's mission brings him to the...