A man is found brutally murdered - and the only possible perpetrator happens to be dead. As more killings follow, it becomes clear that mass carnage being planned and organized from beyond the grave. The Daemon is seemingly unstoppable, and murder is the least of its capabilities. A lethal program designed by a twisted genius, the Daemon inhabits the systems on which an increasingly interconnected society depends. In a world where everyone and everything is online, nothing is out of its reach. Just don't turn on that computer.