Steven C. Miller has directed a movie with a concept that is, simply put, fuckin’ cool.

“Werewolves,” written by Matthew Kennedy and now in theaters via Briarcliff Entertainment, is about a world where the annual supermoon turns everyone outside into huge, hungry werewolves that rip apart anyone in their path. Luckily, Frank Grillo plays a ripped scientist who is close to a cure, but also has to worry about keeping his family safe during yet another supermoon. There’s tons of in-your-face werewolf action, big guns and lots of blood and guts in this throwback flick that would feel right at home in a drive-in double feature.

Miller has plenty of experience with both action and horror films, directing movies like “Mauraders,” “First Kill” and “Silent Night” and working with big names like Sylvester Stallone and Nicolas Cage. He spoke with Variety about the joy of practical effects, how microbudget...