I inhaled this book as I usually do with Simon Green's Ishmael Jones books.
It's a great example of locked room mystery and it kept me on the edge till the end, keeping me guessing and trying to understand how it could have happened.
It's a great thriller and the paranormal aspect plays a minor role comparing to other books in this series.
Penny and Ishmael are great characters as usual but I also liked the well thought and fleshed secondary characters.
The book closure makes me wish that the next instalment will be out something like tomorrow.
An excellent and gripping read, highly recommended.
Many thanks to Severn House and Netgalley for this ARC, all opinions are mine.