Book excerpt: NEW YORK TIMES BESTSELLER • “A breathless read” (USA Today) featuring “some of the most ingenious military-techno twists this side of Tom Clancy” (San Francisco Chronicle). David Elliot is about to have a very bad day at the office. Each morning in his forty-fifth floor executive suite, David savors the quiet moments before the workday begins. Until today, when his boss walks in and aims a gun at him, murder glinting in his eye. For the rest of the day, David will be trapped in a midtown tower with a team of ruthless and professional mercenaries. Everyone he meets—and knows—will try to kill him. They expect him to be dead by lunchtime. But they’re wrong. This is the “killer” workday redefined, a high-stakes and whiplash-paced drama that plays out with an electrifying intensity. You’ll never see the office the same way again.