Leocadia arrives home from school to find her mom's body. Unaware that the killer still lingers, she rushes to her mother's side, only to be grabbed from behind. And everything fades to black.
Leo has been battling personal demons after a year of retrograde amnesia. She's been having vivid dreams of that day. And her dreams are getting worse—she's starting to remember. Two more bodies are discovered and they are oddly linked to her mom's unsolved homicide.
Leo befriends her new neighbor. He's eager to visit Star Hallow's notorious haunted mansion. It's located on a deserted cul-de-sac where she once lived and where her mom was murdered. But it's the Lucien Estate, the mansion next door to her old home, where they happen upon misty ghosts, ghosts that just might help to unravel the homicides.
Will Leo's memories send her reeling into a relapse, or will she be able to overcome her demons to find her mother's killer - only to become the next victim?