The Silent Neighbours - Watchers, #2

The Reaper Virus has raged across the globe, leaving over one billion people dead. After an EMP brought Earth's technological age to its knees, the superpowers have entered a race to rearm, leading to new tensions between the East and West. Tensions that those responsible for the virus hope to exploit to deadly effect. Unwillingly thrown into the fight once again, Adam and Sam find themselves in a deadly fight against evil.
Against the one responsible for The Reaper. The fate of the human race on Earth is about to be decided once and for all.