Determined to find out who the killer is, Dean Munsch, Denise and the Chanels question Hester, as well as the sole survivor (guest star Alec Mapa) of the Halloween massacre. Chad accuses Brock of being the killer and makes a shocking proposal to Chanel. Meanwhile, a new patient with an outrageous disorder (guest star Cheri Oteri) leads Chanel #3 and Cassidy to grow closer, and another victim crashes a celebration.