X begins with a group of bohemian young people, led by would-be impresario Wayne (Martin Henderson), driving out of town to shoot a porno. This is a bad idea when you’re in a slasher, but the aspiring adult-film stars — the bombshell Bobby-Lynne (Brittany Snow), the well-endowed Vietnam vet Jackson (Scott Mescudi), and Wayne’s fame-hungry girlfriend, Maxine (Mia Goth) — haven’t had a chance to realize how little a chance they have at survival. It’s 1979, a year before Friday the 13th came out, and over a decade and a half before Matthew Lillard would lay out the rules to making it out of a horror movie alive, with number one being “sex equals death.” That said, if any of them had seen The Texas Chain Saw Massacre, which hit theaters in the fall of 1974, they’d be at least a…
