Cherub17 books in series
Cherub: The Recruit Publisher's Summary
A terrorist doesn't let strangers in her flat because they might be undercover police or intelligence agents, but her children bring their mates home and they run all over the place. The terrorist doesn't know that a kid has bugged every room in her house, cloned the hard drive on her PC, and copied all the numbers in her phone book. The kid works for Cherub. Cherub agents are aged between ten and seventeen. They live in the real world, slipping under adult radar and getting information that sends criminals and terrorists to jail.