There is one serial killer who has shaped and defined police profiler Tony Hill's life, whose evil surpasses all others and who has the power to chill him to the bone: Jacko Vance. Now Jacko is back and set on exacting revenge on Tony for the years he spent in prison. Tony doesn't know when Jacko will strike, or where. All he knows is that Jacko will devastate his life in ways he cannot imagine.