Goosebumps - Season 2 Episode 18
How to Kill a Monster

Gretchen and her brother, Clark, hate staying at their weird grandparents house. they live right in the middle of a dark, muddy swamp. And things just keep getting spookier as theres something really weird about Grandma and Grandpas house. Something about that room upstairs. The one thats locked and has those strange noises coming from it...