For decades, Hugh Grant was the ideal romantic-comedy heartthrob, so there’s something darkly subversive about casting him as a religiously minded psychopath who preys upon women in Heretic, a delightfully deviant new film that mixes theology,

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”),