“Margaux” (*1/2 out of four) was a ludicrous suspense thriller about a group of college friends (Madison Pettis, Vanessa Morgan, Phoebe Miu, and others) who rent a house for a weekend of sex and partying but soon find that the house’s A.I. system Margaux (voiced by Susan Bennett) has sinister plans for all of them and turns against them. Perhaps the first movie ever about an evil A.I. house system is often laughably dumb. Lochlyn Munro has a small but key role here and this is a reunion for him and Vanessa Morgan but this just doesn’t have the conviction and intelligence of their last collaboration “Riverdale.”