From MadCap's Couch - Tales from the Darkside: "The Cutty Black Sow"

"Don't...forget...to drink...your Ovaltine..."

So...here we are. Halloween. This entire month, all of Horror Month 2017, has been building to this moment. If I could be permitted to stroke my own ego a bit here (and I will, it is my blog), I think I've saved the very best for very last. "The Cutty Black Sow", besides having an incredibly silly name, is considered by many fans to be the absolute scariest episode of Tales from the Darkside. But is it?

Portrait of a family, their great-grandmother on Death's Door. She asks for the day and, when told it is the 30th of October, she becomes hysterical and proclaims she's going to die on Halloween. Her great grandson, Jamie, awakens in the night and hears her speaking of the monster known as the Cutty Black Sow, a monster who comes on Halloween night to take the souls of a family...unless a certain ritual is performed to shield each member of the family.

...the ritual of which, Granny is very much able to give detailed exposition about despite having a foot in the grave. Convenient!