How to Kill a Monster is the 27th episode of the Goosebumps TV series. It is based off of the 46th book in the original series.
Synopsis[]
Gretchen and her new stepbrother, Clark, are staying at their weird grandparents' house while their parents are on their honeymoon. They live right in the middle of a dark, muddy swamp. And things just keep getting spookier as there's something really weird about Grandma and Grandpa's house. Something about that room upstairs. The one that's locked and has those strange noises coming from it.