Amber Reynolds is in coma but although she cannot move or see, she can hear everything. Her sister, Claire, and husband, Paul, are constant visitors but Amber is not quite sure whether everything she is hearing is true or not; after all, sometimes we all lie. 
 I really wasn't sure how much I liked this book until right at the end. The story is clever, and the way that things go backwards and forwards from before and after Amber's accident and right back to the early diaries, gradually revealing more and more of the truth (and lies) as they do so, works really well in this case. The characters of Amber, Paul, Claire and Ed are very well drawn, and we get to know a lot about them from various differing viewpoints which, again, works well in this case. 
 The cleverest bit about this book though is the way it keeps turning itself on its head. There are about 3 or 4 points where you really think you have the idea of what is going on, but then everything shifts and you have to re-evaluate - I loved the way that this was done as it made me want to keep reading; I never felt I was totally sure of what was going on and that made me want to read more. 
 Unfortunately, there is a section half way through the book where the tension does start to dissipate a bit and I did want things to hurry up which is the reason why I rate this a 4 star book instead of a 5. Other than that, I do like a book which is unpredictable and this one kept surprising me right up until the last paragraph. A great read and definitely an author to look for again in the future.