A book by Mo Hayder a little confusing at first because a lot slower than what she had accustomed us then, the pace picks up and the story keeps us in suspense until the last page. In the end, a thriller led by a master hand: no wonder the part of Mo Hayder! That sensitive souls can rest assured, this is not a book but a bloody great suspense. Highly advisable for fans of the author and for those who do not know it yet.