When Molly Heyworth comes across an eerie video on the internet, she believes it to be a hoax. It’s an early instalment to a video blog detailing the Garrison family’s home renovations. On her computer, Molly watches the couple tearing down a wall to reveal a room, where no room should exist. But what unnerves her is the strange altar the Garrisons find inside, where strange symbols on the walls and remnants of blood hint at Satanic rituals. As the weeks pass, Molly grows increasingly preoccupied by the family and their tragedies, especially with the two young boys, who are particularly plagued by the forces within the house. When the youngest goes inexplicably missing from inside the house, Molly’s interest turns to obsession. The more she unravels, the more it becomes clear that the horror has already devastated the Garrisons’ world, but for Molly the horror has only just begun.

There are two things Harper Lynch wasn't expecting when she made out with an attractive stranger at her aunt's wedding. One: He would show up on her doorstep two weeks later as the son of an old family friend. Two: That he would be staying in her house, right next door to her. If living together isn't enough, Duke starts to go to Harper's school for the year, and immediately earns the status of the senior heartthrob. Suddenly, Harper, the girl who keeps mostly to herself and spends a lot of time in her room watching Buffy the Vampire Slayer marathons, is the envy of every girl in her high school. Harper couldn't care less, and despite that fact that she has insisted that she has in no interest in Duke, she is still subject to the wrath of jealous, catty bitches and the admiration of wide-eyed freshmen. It really doesn't help that Duke is constantly flirting with her in his own irritating yet charming way. Harper refuses to be yet another conquest, but is that what Duke wants? Or does he want more?