The Digital Plague (Avery Cates Series #2)

Avery Cates is a very rich man. He's probably the richest criminal in New York City. But right now, Avery Cates is pissed. Because everyone around him has just started to die - in a particularly gruesome way. With every moment bringing the human race closer to extinction, Cates finds himself in the role of both executioner and savior of the entire world.