BOOK FIVE of the SERIES ---Operation Melchior-Sanctum was a failure and potential embarrassment. It went wrong, terribly wrong. So wrong the entire team of DevGru Operators had been quietly retired...to head off any bad publicity. But now those men were being killed one by one, and faster than the law could react. Jon Crane is asked to do the impossible, find out who this killer is and stop him…fast. Working with a group of federal agents, Jon soon learns that this adversary is the most dangerous he has faced, and that this killer is his equal in resources and skill, if not more so.