Maximum Security - Robert Muchamore

The CIA have been hunting Jane Oxford, an international weapons dealer, for thirty years. Her only weak point is her son, Curtis. It's a job for CHERUB. CHERUB kids are highly trained professionals. Their essential advantage: a criminal never suspects that a kid could be spying on him. This is James Adams' most dangerous mission so far, working undercover inside a maximum security prison. Over the years, CHERUB has put hundreds of criminals behind bars. Now, for the first time ever, they've got to break one out.