Alice Bell has lost so much. After a new zombie attack, strange things begin to happen to her. Mirrors come to life, and the whispers of the dead assault her ears. But the worst is a terrible darkness that blooms inside her, urging her to do very wicked things. She's never needed her team of zombie slayers more, but ultra bad-boy Cole Holland, the leader and her boyfriend, suddenly withdraws from everyone. Now Ali must kill the zombies, uncover Cole's secret and learn to fight the darkness, but if she fails at a single task, they're all doomed.