Lucas Simmons and Tre Paxton love to play video games. All kinds of video games. But most of all, they love the online first-person shooter game Shadowkill.They are so good at Shadowkill that they win an international online competition and are granted a special invitation to the game company's headquarters for an experimental gaming experience. But what they find is something quite unexpected.Killzone is the first book in the Shadowkill Trilogy. Delve inside the events that the government doesn't want you to know about the bloodiest summer in the war on terror.