Two teenage girls go missing outside their home in the outskirts of London.
Various theories arise but nothing results until three years later there is a double murder in the farm house where one of the girls lived. This was during one of the worst blizzards in history and police couldn't respond fast enough to the 911 call.
Police ask clinical psychologist Joe O'Loughlin for help on why the farm house may have been the subject and what he thinks might be happening to the girls.
Soon after, something is revealed.
This is a very readable book where Joe peels down the layers of mystery and connection to the two murders and the teenagers. Joe brings in his friend and ex-cop Vincent Ruiz to help and provide some law enforcement money for his friend that was promised as a benefit of helping the police.
I enjoyed the story and was totally surprised with an event late in the plot that opened my eyes on the development of the story.
The author continues building his reputation as one of the world's most acclaimed mystery and thriller writers.