True-crime writer Ellison Oswalt moves into a house where the previous family was hung from the tree in the backyard. The entire family was killed except for one missing girl. Ellison is writing a book on the murders and the missing girl.
While moving boxes into the attic, Ellison discovers a box of 8mm films. He begins to watch them in his office and discovers they show the murders of the family he is investigating, as well as other families from throughout the previous decades. Soon after he watches them, he notices a mysterious face in each video, who he suspects to be the killer.
After this discovery, mysterious things start happening in the Oswalt house, and soon the Oswalts join the other families who were murdered by the sole missing child.
- Ethan Hawke as Ellison Oswalt
- Juliet Rylance as Tracy Oswalt
- Fred Thompson as Sheriff
- James Ransone as Deputy
- Michael Hall D'Addario as Trevor Oswalt
- Clare Foley as Ashley Oswalt
- Vincent D'Onofrio as Professor Jonas (uncredited)
- Victoria Leigh as Stephanie Stevenson / Family Hanging Out Girl
- Cameron Ocasio as BBQ Boy
- Ethan Haberfield as Pool Party Boy
- Danielle Kotch as Lawn Work Girl
- Blake Mizrahi as Christopher Miller / Sleepy Time Boy
- Nick King as Bughuul (a.k.a. Mr. Boogie)