If you were to mention her name in a locker room, or in a girls bathroom, you would always get the same look and smirk sent in your direction. Because she was an urban legend. Someone people told their younger siblings about when they wanted to brag about how awesome it was to be a teenager. The details and the ending would always change, but the conclusion to the story was always that; "that girl had some serious daddy issues." (Art on cover credited to http://athousandclouds.tumblr.com/)

Seventeen-year-old April Parker wakes up in an underground facility, a shock bracelet on her wrist and a five-day countdown on the clock. Dozens of other teens share her inexplicable fate, but their unseen captors never intervene no matter how brutal conditions become. When the ruthless - and unnervingly magnetic - Marcus seizes control, April's trauma-forged instinct is to lay low. But protecting her friends drives her to bargain with the boy she should fear most - a boy whose reality fractures with every tick. Then the countdown ends, and the real terror begins. Powers ignite. Alliances shatter. And predators are born. And with a saboteur among them determined to keep the doors closed forever, escaping what comes next may be the only way to survive it.