Kaitlin, the social pariah of her high school, is so relieved to have made friends at Camp Overlook—and to have caught the attention of a real, live, honest-to-goodness boy—that she is willing to look past the camp’s anomalies: creepy grey-eyed counselors, 24-hour video surveillance, and campers falling ill and then disappearing quietly into the night.

But when Kaitlin begins feeling strange symptoms herself, she can no longer pretend that Overlook is a run-of the-mill summer camp. She and her new friends must race to solve the mystery of Camp Overlook, even if it means facing some difficult truths and uncovering some painful family secrets, before she is the next camper to vanish.