“The Unholy” is a good tight scary commercial theological horror film. Its spooks and demons unfurl within a pop version of Christianity, which makes it sound no more exotic than last week’s “Exorcist” knockoff or last year’s helping of the “Conjuring” franchise. But “The Unholy” has a religious plot that actually works for it. It…

‘The Unholy’ Review: A Religious Horror Movie You Can Believe In — Variety