“Garden Party Massacre” (0 stars out of four) was an absolutely worthless horror movie that looked like someone’s bad home movies about a gathering of friends (Andy Gates, Nichole Bagby, David Leeper, and others) at a garden party that is suddenly disrupted when an uninvited guest shows up and starts massacring everybody. Dreadful acting and filmmaking, however, turn this into an even more terrifying massacre for the audience. Even at only an hour and 10 minutes, this is still a brutal watch. Film’s title vocals are by Peter Stormare (from “Fargo”), of all people, but he may have been better off doing more Volkswagen commercials instead.