NEW YORKIt may be Christmas in New York, but for ex-soldier turned élite bodyguard Ryan Lock it's business as usual: his mission is to protect one of America's most ruthless businessmen.A BLOODY SHOOT-OUTSuddenly gunshots ring out. People run for cover. Innocent people are mown down. Amid the chaos, Lock's hunt for the killers turns into an explosive game of cat and mouse.A DEADLY SECRETLock's search for the truth takes him from the rooftops of a New York skyscraper to a heavily fortified warehouse on the Hudson where he confronts one of the world's most dangerous women. As the clock ticks towards midnight on New Year's Eve, all routes into and out of Manhattan are sealed, and Lock realises that not only is his own life in terrible danger but so are the lives of millions of others...