I didn't know anything about this case and I knew the author as profile but not as writer.
It's a gripping, heart-wrenching, often disturbing story. You cannot help feeling for the relatives of the victims and the victims, you're also left wondering what's going on in the mind of this type of serial killer.
The author did an excellent job in alternating the more emotional part with the retelling of the investigations.
Highly recommended.
Many thanks to the publisher and Edelweiss for this ARC, all opinions are mine