“Trespass and die,” reads an unneighborly sign glimpsed early in Josh Ruben’s agile, niftily directed whodunit “Werewolves Within.” While it specifically refers to some local’s private property, one could safely apply the warning to the whole snow-clad Vermont village that surrounds it. Welcome to Beaverfield, a sleepy town chock-full of secrets, lies and ideological disparities […]