The story itself is well put together, and this over several periods. We discover the main characters in a first survey (very brief), then find a year later for another oddly similar survey. It seems that current methods of profiling and criminal investigations are followed. In any case, I had no trouble understanding police procedures. The action is often to go, whether in the capture of the victims (which is still very short), or the discovery of the bodies, or in the arrest of the suspects attempted ...
The characters are, I think, the book keystone. We discover the history of Brolin inspector who not content with his involvement with the FBI finds very easy cop involved in criminal investigations. It has the "gift" of profiling and still seems a very nice boy. Juliet Lafayette is a survivor victim Brolin saved by the inspector himself. It has character and refuses to be victimized. Both will find themselves involved in the ongoing investigation and their relationship tend to make the book even more exciting, especially the danger is never far away. The other characters are all very fair and all bring a little something to the story. The reader can only shake when the serial killer chooses his victim!
The whole is an exciting thriller which forms the first part of a trilogy that I will have a lot of fun to continue.