Alex Rider is a 15 year old teenager who is working for the MI6 - Englands secret agency. He is an agent who goes on missions as a spy to give information back to the M16, this book is about one of his several missions and is byfar the best Alex Rider book I have read. Alex, who is not keen on working for M16 anymore, is forced back into the spy buisness to infultrate Scorpia, who are apparently spying on a school in Cairo. But in reality Scorpia are organising Alex to turn up here to capture him and release a clone. I would recommend you read Scorpia first, before reading this book, Scorpia Rising as the story would make more sense. This is great read for someone who is looking for sci-fi, spy, action genres.