New York : Simon & Schuster Books for Young Readers, c2009.
1st Simon & Schuster BFYR pbk. ed.
209 p. ; 22 cm.
Terrified by the gruesome nightmares and unexplained bouts of sleepwalking that seem to be affecting her and many other students at Saint Opportuna High, Emma and her friends become even more unnerved when, after several deaths, they begin to suspect that something is causing them to kill in their sleep.