Detective Halls has a serious problem, and he desperately needs help to solve it. Bodies are piling up inside the mountain at an alarming rate. And he's running out of time. From the very first discovery of a shattered skull, the situation worsens by the hour. Relentless or not, unless he catches a break, someone else will die. Only one question matters. How is the killer meeting the victims? You see, Mike's Old School, and he hasn't got a clue. That is, until a rookie cop exposes an embarrassing secret. Ultimately though, it's a case of evolve or die. There's no room for Mike's pride in the hunt for the most devious murderer he's ever encountered.