Emma Montgomery has been having trouble sleeping. Whenever she closes her eyes, all she can see are the horrible nightmares . . . nightmares of gruesome murder. And she's not alone. All of the students in Dr. Beecher's secret society have been having terrible dreams and sleepwalking. Now, as their classmates start turning up dead, Emma and her friends race against the clock to keep themselves awake and find out what is causing them to kill in their sleep—before the next victim dies.