This is the third book I have read by Louise Jensen (the other two being The Sister and The Gift), and I love how they are all thrillers with a difference. This is definitely the darkest of her stories I have read; addressing how brainwashing can be perceived by different people from the perspectives of 17 year old Tilly and her mother, Laura (as well as a couple of other characters). I was really gripped during the last quarter of the book, where the action really picks up, and becomes very dramatic - yet still somehow believable, which is something many thrillers lack.