6th book in the Alex Rider series.

Other books include:
Stormbreaker (#1)
Point Blank (#2)
Skeleton Key (#3)
Eagle Strike (#4) 
Scorpia (#5) 
Snakehead (#7)
Crocodile Tears (#8) 
Scorpia Rising (#9)
Russian Roulette: The Story of An Assassin (#10)

*Fun fact: first series I ever read and the books that made me never want to stop reading