What links a drugs smuggler, a corrupt customs official and the illegal immigrant who made your lunchtime sandwich? Ryan Sharma's about to find out. Ryan is the newest recruit to CHERUB. Twelve years old, just out of basic training and as green as grass. He's got his first mission: befriending Ethan Aramov, a spoilt rich kid living in California whose grandmother just happens to run a billion-dollar criminal empire. Ryan's got no idea that his routine first mission will turn into one of the biggest in CHERUB history...

Ryan has saved Ethan’s life more than once. Ethan thinks he must be a guardian angel. But Ryan works for CHERUB, a secret organisation with one key advantage: even experienced criminals never suspect that children are spying on them. Ethan’s family runs a billion-dollar criminal empire and Ryan’s job is to destroy it. Can Ryan complete his mission without destroying Ethan as well?

The Aramov Clan has splintered into two rival factions and Ryan is joined by more CHERUB agents as his three year mission enters its final phase. Ryan is about to board a plane, knowing that the next twenty-four hours will change everything. His mission is to stop the biggest terrorist attack America's ever seen. Ryan works for CHERUB, a secret organisation with one key advantage: even a trained terrorist won't suspect that a teenager is spying on them. For official purposes, these children do not exist.

Fay has spent eighteen months locked up in a Secure Training Centre. Drug deals and rip-offs are the only things this teenager knows. Now she's back on the street, looking to settle old scores. CHERUB agents Ryan and Ning need Fay's knowledge to unearth a major drug importer. They're trained professionals with one essential advantage: even experienced criminals never suspect that children are spying on them. But Fay's made a lot of enemies and she's running out of time ... For official purposes, these children do not exist.

James Adams returns as old guard, controller for Cherub agent new guard Ryan Sharma. Undercover Cherubs can slip below adult radar for information that sends criminals and terrorists to jail. But undercover are not recognized for good results or bad, and punishment is ... off with their heads. The mission is a double kidnapping by oil terrorists to Syria. The Cherubs assemble a team of legendary agents to find the two hostages and bring them home.