Hellhole

Hellhole is a 2022 Polish horror film set in a Polish monastery in 1987, when a police officer investigating mysterious disappearances infiltrates a remote monastery and discovers a dark truth about its clergy. It is directed by Bartosz M. Kowalski, who also helped write the screenplay with his frequent writing partner, Mirella Zaradkiewicz.

Synopsis from Wikipedia, CC BY-SA 4.0. Everything below written here.

Poster © the film's rights holders.