The Door is a German film, telling the story of David Andernach, played by Mads Mikkelsen. I was dubious of Mikkelsen’s ability to carry this film off. I am most familiar with him from Casino Royale, in which he played a suitably menacing but also expectedly caricatured Le Chiffre. The way The Door is constructed requires intense focus on the personal viewpoint of Andernach and Mikkelsen is in practically every scene. You really notice it when things centre round his wife for a few minutes towards the climax. Thankfully his performance is varied, convincing and touching at times.