Harry Adams has always loved horror movies, so it’s not a total coincidence that she took the job cleaning house for movie director Javier Castillo. His intimidating graystone Chicago mansion, Bright Horses, is filled with bone-chilling memorabilia from his days of being an acclaimed director --- until family tragedy and scandal forced him out of the industry. Above all, Javier values discretion so Harry tries to clean the house immaculately and keep her head down and her job safe --- the job that allows her to support her son. Harry starts hearing voices from behind a locked door, a voice that sounds human. The voice sounds like someone calling for help, even though Javier lives alone and never has visitors. Harry is torn between not asking Javier questions to keep her job and the need to uncover the house's sinister secrets.

Celia wakes up in a house that’s supposed to be hers. There’s a little girl who claims to be her daughter and a man who claims to be her husband, but Celia knows this family --- and this life --- is not hers. Allie is supposed to be on a fun weekend trip --- but then her friend’s boyfriend unexpectedly invites the group to a remote cabin in the woods. No one else believes Allie, but she is sure that something about this trip is very, very wrong. Maggie just wants to be home with her daughter, but she’s in a dangerous situation and she doesn’t know who put her there or why. She’ll have to fight with everything she has to survive. Three women. Three stories. Only one way out.