“Snow Valley” (* out of four) was an almost unendurable horror comedy about a group of friends (Barbara Crampton, Rachael Michiko Whitney, Cooper van Grootel, and others) who go on a ski weekend which goes awry when a dark supernatural force threatens to overtake them and kill them off. Full of obnoxious characters and smarmy acting with dumb dialogue; in other words a real mess. It’s timewasters like this that killed the horror genre back in the ’80’s. Inauspicious directorial debut from Brandon Murphy who in better days was the writer of “The Hitman’s Wife’s Bodyguard.”