I'm juggling a few books at the moment and currently this is the one that I can't put down. As opposed to the next one I'll mention that I can't put down. (Whoever invented having to work when there are books is a meanie).
From the Blurb:
When David's 11-year-old nephew goes missing and he finds the finger pointed at him, he has no choice but to strike out on his own – an unlikely vigilante running away from the police and his own family, and running towards what he hopes desperately is the truth about Andrew's disappearance.