In Yosemite National Park, Carole Sund, her daughter Juli, and friend Silvina Pelosso vanish during a dream vacation. What begins as a search-and-rescue mission quickly turns into a homicide investigation when two bodies are found in a burned-out rental car. Detectives uncover a terrifying story of betrayal and murder in one of the nation’s most beautiful landscapes. Then, when a convicted murderer escapes from a maximum-security prison, a deadly manhunt begins.