House Rules by Jodi Picoult

Jacob Hunt is a teenager: brilliant at maths, wicked sense of humour, extraordinarily organised, hopeless at reading social cues. And Jacob has Asperger’s. He is locked in his own world – aware of the world outside, and wanting to make a connection. Jacob tries to be like everyone else, but doesn’t know how. When his tutor is found dead, all the hallmark behaviours of Jacob’s syndrome – not looking someone in the eye, odd movements, inappropriate actions – start looking a lot like guilt to the police. And Jacob’s mother must ask herself the hardest question in the world: is her child capable of murder?

I got home last night and did just about nothing but read this book (escapism, anyone?). Anyway, I enjoyed it. It's not up there with My Sister's Keeper or The Pact in terms of screwing with the way you think about things, but it is better than some of the others. Although the "twist" is glaringly obvious from well beforehand.