Newly orphaned seventeen-year old Marin accepts a nanny position for an acclaimed horror writer and her mother's childhood friend, but she soon realizes all is not well at Lovelace House and must unravel its secrets before they consume her. After a tragedy leaves Marin Blythe alone in the world, she receives an invitation from Alice Lovelace-- an acclaimed horror writer and childhood friend of Marin's mother-- offering a nanny position at Lovelace...

Moving the action out of the woods and into the city it tells a twisted tale of two estranged sisters, played by Sutherland and Sullivan, whose reunion is cut short by the rise of flesh-possessing demons, thrusting them into a primal battle for survival as they face the most nightmarish version of family imaginable.