Ark Angel (Alex Rider #6) by Anthony Horowitz

Pre-loved

The sniper's bullet nearly killed him. But once again Alex Rider managed to survive.... just in time for more trouble to come his way.
When 4 armed men attempt to kidnap a fellow patient in the exclusive hospital where Alex is recuperating, he knows he has to stop them. What Alex does not know is that the boy is no ordinary patient, but the son of Nikolai Drevin, one of the richest men in the world.