Watch Monster Killers for Free: How to Stream the Movie Online at 123Movies. . Monster Killers packs the goods...and the gore. This monster-themed anthology features some of the best up-and-coming short horror filmmakers from around the world. When monsters rise, it's nighty-night for the rest of us. Collects short films: The Sneak, Bedroom Window, Familiar, The Flea, Good Evening, The Dweller, Howl (Of A Good Time), Get Off My Porch