Based on The New York Times bestselling book—Lucy just left a locked psych ward. Kimi is a Ugandan immigrant. Both teenagers begin new lives as they enter college. They’re full of promise, but quickly succumb to paranoia and misery. Kimi is on the brink of homelessness and Lucy is convinced people want to murder her simply because she’s autistic. The women are part of a global mental-health mystery that threatens an entire generation. Beginning in 2012, anxiety, depression, and suicide shot up among young people, and nobody knew why. Then answers emerged from an unexpected source—a man named Greg and his own brush with suicide.