When Jamie Black discovers her mother has gone missing in THE POSSESSION AT GLADSTONE MANOR, she resolves to investigate by applying for the same job her mother held at Gladstone Manor. Jamie soon finds evidence that her mother isn't the only missing person, and that she may be dealing with sinister forces beyond this world. Desperate, she enlists the help of her brothers - Rupert and Chris - and Sam (Chris’ fiancée): all of whom are professional criminals and former marines. Once Jamie arrives at the house, she is immediately greeted by a mysterious and evil Nurse, and soon realizes the residents of Gladstone Manor are an enemy like no other, with a dark power she’s never faced. Trapped in the house, she must rely on her brothers and future sister-in-law to save her.