Grace enlists Chanel's help to learn more about KKT's past, and ends up realizing she might not be so different from her nemesis after all. Dean Munsch goes "psycho" when she becomes the latest target of the Red Devils. Meanwhile, Denise becomes the new house mother of Kappa House and a shocking figure from the past returns.

Chad takes Chanel to his family home for Thanksgiving, where she meets his brothers, Brad and Thad, as well as his parents. However, an uninvited guest throws the holiday into chaos. Meanwhile, Dean Munsch gathers the survivors at Kappa House, but dinner quickly explodes into accusations of who among them is really the killer. Then, the Red Devil carves up a deadly main course as another victim falls