Slow pace in the most part of the movie.

The performances transcend the film's tropes, grounding it in characters that feel more complete than this subgenre often produces.

A lot of perfectly good film show their cards early, establish a unique premise and let the audience explore a topic at a leisurely pace, without much in terms of surprise. this film is not one of those films.

While it doesn't offer any answers, it both thrills and makes you think.