For 16-year-old Dan Crawford, New Hampshire College Prep is more than a summer program—it's a lifeline. An outcast at his high school, Dan is excited to finally make some friends in his last summer before college. But when he arrives at the program, Dan learns that his dorm for the summer used to be a sanatorium, more commonly known as an asylum. And not just any asylum—a last resort for the criminally insane. As Dan and his new friends, Abby and Jordan, explore the hidden recesses of their creepy summer home, they soon discover it's no coincidence that the three of them ended up here. Because the asylum holds the key to a terrifying past. And there are some secrets that refuse to stay buried.