After two feature-directing credits, it’s safe to declare writer-director Ari Aster a master of horror. Midsommar, the sophomore effort after his masterpiece Hereditary, is 2 1/2 hours of nerve-fraying terror, staged mostly in broad daylight—and it’s a thing of demented beauty. Dani (Florence Pugh, who is dynamite) and Christian (Jack Reynor, who is excellent) are […]