Stormbreaker by Anthony Horowitz.
Language:The bad guy keeps saying Bliddy.I don't think that is cuss word and that it is close to Bloody.
Violence:Being in great danger, almost drowning twice, someone is killed by a giant jelly fish, several people murdered/shot, people trying to kill Alex, holding a gun on someone, shooting at some people and jumping out of a fifteen-story building to another.
What I thought:Fast paced, an easy read because it is so exciting and a real page turner.It's an action book so if a ton of that and a little violence(people trying to kill Alex) are fine for you, then you are good.
Rating & Age:4 stars.13/14 up.