I've just finished reading this book. It's by the same author who wrote Damaged. Hidden is even better than Damaged. I don't read many books but I couldn't put this down. The issues she has to deal with in her children's behaviour is incredible, and I learnt a lot! Hidden is only in hardback at the moment but I got it for £7.99 which is not much more than the paperback will be. I emailed Cathy after I'd read her books and she emailed back, and was really nice. A lovely person, who writes great books. Can't wait for the next one.