For the visitors to Wilsonville, the largest theme park in the world, the day began with a smile. By the end, they wonder-will they be able to escape with their lives? Retired Delta Force operator, Master Sergeant Jonathan "Jad" Bell, is Wilsonville's lead undercover security officer. The threat begins with the announcement of a hidden dirty bomb, but quickly becomes something far, far worse.

Lauren Heller and her husband Roger, a brilliant executive at a major corporation, are attacked in a Georgetown parking lot after an evening out. Knocked unconscious by the assailants, Lauren lies in a coma in the hospital while her husband has vanished without a trace. With nowhere else to turn, Lauren's teenage son Gabe reaches out to his uncle, Nick Heller, a high-powered investigator with a corporate intelligence firm in Washington, D.C. Having...