“House of Last Things" is a movie about relationships, as much as it's about a haunted house. But, is the house haunted or is it the dreamlike projections of guilty parties giving this central location a sense of power? RJ Mitte turns in a solid performance as the disabled brother who shows up later in the film, while everyone else plays utility roles. Make the crazy women kill herself and commit affairs seems to be the two trains of thought powering the movie. All the while, everyone else runs together like trains on the wrong tracks.