Though it is relentlessly grim and terrifying, The House That Jack Built is still an important work of art, since neither grimness nor terror disqualifies a movie from being art. It is a well-made horror movie by Lars von Trier about a serial killer and, ultimately, a morality tale. Von Trier depicts the murders the killer commits in clinical, detached detail and they are chilling to watch. Hitler and Mussolini are the killer’s icons, so be prepared to be unsettled. Think American Psycho without the satire.