Ann Brooks never thought she’d have to answer that question. Then she found her limits tested by a crisis no one could prevent. Now, as her neighborhood descends into panic, she must make tough choices to protect everyone she loves from a threat she cannot even see. In this chillingly urgent novel, Carla Buckley confronts us with the terrifying decisions we are forced to make when ordinary life changes overnight. A year ago, Ann and Peter Brooks were just another unhappily married couple trying–and failing–to keep their relationship together while they raised two young daughters. Now the world around them is about to be shaken as Peter, a university researcher, comes to a startling realization: A virulent pandemic has made the terrible leap across the ocean to America’s heartland. And it is killing fifty out of every hundred people it touches.