A twisted and thrilling genre-bending novel that shines a light on the terrors of the U.S. opioid epidemic, Clay McLeod Chapman has written an instant classic about a mysterious new drug plaguing a small town and the haunting side effects. At sixteen, Kyra is still haunted by the horrors she saw growing up with her drug-addicted mother. She doesn't feel like she belongs anywhere--and disturbing dreams come to her at night. When a new party drug makes its way to her high school, Kyra's life becomes an actual nightmare. A video challenge spreads among the students--and though she doesn't participate, Kyra can't escape the inexplicable side effects. Everyone around her seems to be mysteriously changing, including the people she loves the most. Her brother has a new personality overnight. Her best friend suddenly feels like a stranger. The only other person who seems to notice the eeriness is Logan, the new boy at school. Like Kyra, he has steered clear of the party scene. When the strangeness begins to feel sinister--or unnatural--Kyra is determined to find out exactly what is behind the mysterious drug. As she and Logan get closer to the truth, the line between Kyra's past and present blurs . . . and she will need to face the terrors inside herself, or lose everyone she loves. "Clay McLeod Chapman is one of my favorite horror storytellers working today."--Jordan Peele "The most ambitious novel yet from a writer quietly redefining the emotional contours of contemporary horror."--Vulture on Wake Up and Open Your Eyes