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.