I watched this last night, and it is terrific. I had some minor criticisms, but overall it is a hugely powerful and compelling experience, with a superb central performance from Kirby, and a fine supporting cast (that monologue about the Holocaust from Ellen Burstyn is amazing). It is very well written and directed, and I was annoyed I couldn't see it in the cinema, where I would have felt more fully immersed in the bleak, wintery imagery. It also injects just the right amount of forgiveness, redemption, and hope at the end. I'll have a full review on my blog this Monday.

On a related note, here are five very different films about grief that in various ways helped me come to terms with the death of my father: Fly Away Home, Departures, The Babadook, A Series of Unfortunate Events, and The Tree of Life. Cinema at it's best can be profoundly cathartic.