Rehabbers Charli Owens and fiancé, Eli Lange, remodel an historic mansion suspected of being haunted. Secret tunnels, hidden chambers, unexplained happenings, and a killer on the loose ignite Charli's curiosity. Enlisting her ex-rock-and-roll singer grandmother’s help, she delves into clues police ignore. Unraveling the property's notorious history, they become embroiled in a murder case and a major criminal operation that puts Charli's life in danger.