This is an excellent thriller because it deals with the subject of the serial killer in a very original way. But it also deals with social issues such as adoption and the consequences it entails, such as the relationship between adoptive parents and adopted child, or the relationship between the adopted child and the natural children. A reflection on the nature and nurture. It is also a thriller whose plot is particularly well done, rhythmic and that will keep you guessing until the end. The characters are very well described and become endearing. The writing is fluid near the diary, or reporting. What makes the public of this novel is wide, and can only be totally seduced by the quality of this novel.