Across the River Styx

The Pen. A snowbound, quarantined peninsula, full of infected, lawless survivors left to die. A place without hope. So when the government offers inmate Russell Black his freedom, how can he refuse? All he has to do is assassinate The Pen's bloodthirsty warlord, Jackson Folly. But as Black and his partner, Sam Powers, begin the hunt for Folly, they trigger a violent chain of events that will change them and The Pen forever.