The first man he murdered returns to teach Ash Tarberrn how to be human. There can be no forgiveness for Ash Tarberrn, no salvation for the men, women and children he slaughtered by infecting them with his deadly virus. When his past comes to confront him and demand his service, he steps into the temptation of time travel for his possible redemption. The violation of time will cost his world, his companions, and him—a price beyond imagining.