The slaughterhouse is filled with bodies. But just as Private begin their investigations, the building explodes, wiping out all evidence of the crimes, and nearly killing Mattie and her team.
Mattie soon realises that a masked killer is picking off Chris's childhood friends, one by one, and destroying the trail. But who wants the past buried so badly? What is the truth about that slaughterhouse? And will Mattie become the killer's next victim?