Hell Hole — Chris Grabenstein

Hell Hole is the fourth book in the mystery series featuring former hardened military PD and current Sea Haven, NJ police officer John Ceepak and his partner, wise-cracking Danny Boyle. In Hell Hole, Ceepak is confronted with his most personal case yet when he must investigate the alleged suicide of a military corporal who recently returned from Iraq. When it turns out that this "locked stall" rest stop suicide is anything but an open-and-shut case, Ceepak and Boyle realize that the corporal might have been privvy to information that opens up a much larger conspiracy that strikes at the heart of our involvement in the Middle East, and puts them on the wrong side of some very unpleasant people...