Release Date: June 27,2017

The fourth monkey killer has spent over five years terrorizing the City of  Chicago with his seemingly random murders. Detective Sam Porter has been working this case since the beginning and has not made much progress in identifying a suspect. No matter what leads are presented, the killer always seems to be one step ahead. Finally there seems to a break in the case when a man is killed by a bus. When detectives arrive at the scene a diary is found detailing the life of the fourth monkey.

As the diary is examined, many leads are generated and the suspense starts to build. Porter must dissect the clues and mysteries within the book to move forward with this case. Meanwhile, a new victim is abducted and it is only a matter of time before she will be killed. In this cop versus killer novel, it becomes a race against the clock to save her.  

This was an excellent suspense story by J. D. Barker that I could not put down. The character development, mystery, and suspense were all top notch and I cannot wait for the next book.