In this episode, as Halloween approaches, Zayday (Keke Palmer) makes a stunning announcement and in response, Chanel (Emma Roberts) concocts a devious plan.
And as Hester (Lea Michele) starts to grow closer to Chad (Glen Powell), Dean Munsch (Jamie Lee Curtis) struggles to keep Wallace University open after the whole murder spree by the Red Devil.
The episode opens with Chanel (Emma Roberts) talking about "Chanel-o-ween", where she gives her Instagram followers presents in celebration of Halloween.
Detective Chisolm (Jim Clock) is interviewing Dean Cathy Munsch (Jamie Lee Curtis), asking if she saw the Red Devil enter the house.
Denise (Niecy Nash) rushes into the house and tells everyone about the attempted murder of Caulfield (Evan Paley) and says when they get fingerprints from the chainsaw that they'll find them to be Zayday (Keke Palmer)'s.
Meanwhile, Grace (Skyler Samuels) and Pete (Diego Boneta) drive to a trailer which is owned by Mandy who tells them what happened 20 years ago.
In a flashback to 1995, Mandy and her sorority sisters are forced to wear hoods while Cathy drives to a location to bury Sophia (McKaley Miller)'s body.
During lunchtime at the university's cafeteria, Chanel and her minions are handing out flyers for their Pumpkin Patch and they run into a guy named Tommy (who is wearing a shirt with a Psi Theta Gamma fraternity) and his friends who make disrespectful remarks toward the ladies.
Other recurring guest stars includes Jan Hoag as Ms. Bean, Breezy Eslin as Jennifer "Candle Vlogger", Jeanna Han as Sam "Predatory Lez", Jim Clock as Detective Chisolm, and the characters from the 1995 flashbacks; Sophia (McKaley Miller), Amy (Chelsea Ricketts), Coco (Anna Margaret), Bethany (Anna Grace Barlow), and Mandy (Grace Phipps).
Jennifer Aspen made a guest appearance as the older Mandy Greenwell, whom Grace and Pete visits to search the information of the bathtub baby.
[7] Patrick Sproull from Den of Geek said that "Scream Queens remains engrossing television and Haunted House greatly improves things by spicing up the core mystery.