Skeleton Key by Anthony Horowitz

Skeleton Key: the Graphic Novel : Paperback : Penguin Putnam Inc : 9780399254185 : 0399254188 : 12 Nov 2009 : Working as a secret agent for Britain's most exclusive agency, 15-year-old Alex Rider is now about to face something more dangerous that he can imagine: a man who has lost everything he cared for and who has a nuclear weapon.