I think after a long time i have seen a mystery movie set in Victorian Era and this was the movie i was craving for.
The movie delivers in every aspect from its poetic screenplay to its background scores which truly blends with every scene. On the other hand the way this movie is shot, every frame looks like a beautiful painting showcasing the snowy, cold, mysterious environment of Britian in 1800's. The way they have left bread crumbs in the movie is also very engaging and increases its rewatchability.
So to sum up, you should watch this movie for sure but for the audience who doesn't watch this type of content it might feel slow to you.