A plane on route from London to New York City has disappeared out of the sky. This breaking news dominates every TV channel, every social media platform, and every waking hour of the Metropolitan Police and US Homeland Security. The love of DCI Kate Daniels' life was on that aircraft, but she has no authority to investigate. This major disaster is outside of her jurisdiction and she's ordered to walk away. But Kate can't let it lie. She has to find out what happened to that plane -- even if it means going off book. No one is safe. And there are some very dangerous people watching her.