Point Blank — Anthony Horowitz

TRAPPED!
When an investigation into a series of mysterious deaths leads agents to an elite prep school for rebellious kids, MI6 assigns Alex Rider, fourteen-year-old reluctant spy, to the case. Before he knows it, Alex is stuck in a remote boarding school high atop the Swiss Alps with the sons of the rich and powerful, and something feels wrong. Very wrong. These former juvenile delinquents have turned well-behaved, studious -- and identical -- overnight. It's up to Alex to find out who is masterminding this evil plot, before they find him. The clock is ticking -- is Alex's luck about to run out?