Sophomore Katie Krieg finds a note in her backpack written with letters cut out of a magazine. The note accuses her of having a "thing" with the young, handsome lit teacher, Mr. Grayson. Who would do this? And why? Until this, her life was filled with choir practice, homework, and friends. More notes appear and tension mounts. She knows if her classmates find out about the notes, her reputation, and Mr. Grayson's career will both be ruined, even though it's not true. The notes escalate in their accusations until she begins to wonder if she is losing her mind due to the anticonvulsant...