What would you do if you discovered the man sitting three feet away from you planned to crash your plane into a city-and the only person who could help you was the man whose heart you broke three years ago?Captain Julia Rhodes is five hours into a routine overnight flight from New York to London when she realizes her co-pilot isn't who he claims to be. Small mistakes. Wrong terminology. A phone message in Arabic with coordinates to downtown London.David Carter's record is flawless. His background check came back clean. But Julia's instincts are screaming that something is terribly, fatally wrong. When she discovers Carter is a terrorist planning to crash their Boeing 787 into Canary Wharf, Julia faces an impossible choice: confront a trained killer in a cockpit the size of a closet, or let 287 passengers die. But she's not alone. Eight hundred miles away, Air Marshal Noah Cross sees her coded distress signal. The woman who left him at the altar three years ago is trapped in the sky with a terrorist, and Noah is the only one who can coordinate her rescue. The plan is brutal. Julia has to fight. Noah has to guide her from the ground. Together, they have one chance to stop a catastrophe-and reclaim the love they thought they'd lost forever. Five hours until landing. A knife in the cockpit. A programmed dive toward the ocean. And two people who broke each other's hearts now fighting to save everyone. In the vanishing hour between night and dawn, survival is only the beginning.