That’s the premise, and the clever casting, of “Heretic,” a horror film starring Grant in his least likely role: a total sicko. Written and directed by Scott Beck and Bryan Woods, of “A Quiet Place,” the film features moody cinematography from Chung Chung-hoon (2017’s “It”),

A minimalist feature such as this requires a sharp, intelligent script and performers who can effectively captivate and carry the full weight of the story, and Heretic shines with both. A smart, meta story structure is complemented with intelligent,

So beautifully constructed and acted in the first half is “Heretic” that you won’t really notice when it turns into a horror movie.