Charles (Manson) in Charge - S7-E10
Continuity mistake: Kai applies shaving soap to his whole face, including his upper lip. In the next shot, there is no soap on his upper lip and he puts it on again.
Revealing mistake: After Meadow tells Ali about the cult, Ali's phone shows that her phone call to Ivy has been active for 13 seconds, when in reality the call has been active for much longer than that.
Continuity mistake: A man in a beige jacket and blue jeans walks into the crosswalk and crosses the street. As Ally and Ivy enter the crosswalk on the opposite side, the same man passes them in the crosswalk.
Chosen answer: Because on Halloween, the souls of The Dead are said to roam the Earth. That includes those souls that are trapped within the walls of the "Murder House".
THGhost