Nocturnal Animals (2016)

This is a very unusual movie, which was part of my mission to watch all of the movies that were nominated for an Academy Award.  That aspect was accomplished, and Michael Shannon, who plays the sheriff in the fictionalized part of the film, is exceptional.  He is my second choice in that category, maybe my third, but it was a very strong running this past year.
The story is essentially about triangles, but is one of the tensest movies I have seen in a long time.  One triangle is between Susan (played by Amy Adams), a high end art dealer, her current husband, and her ex-husband, Edward Sheffield.  Another triangle is the main character in the book, the sheriff, and the reader.  Bad things happen, and the movie has a number of threads that are all slowly pulled together in the end.  We know that Edward is badly hurt by his broken marriage to Susan.  We know that Susan has made some terrible choices.  We know that parents screw up their kids.  But this movie makes it all glaringly real.