5. When Violet learned her fate (S1: Murder House, Episode 10)
Near the end of Season 1, Tate proposes that he and Violet commit (fake) suicide. As you might imagine, it doesn't go over well. Violet flees the house, but realizes she keeps ending up back in the house. It's nightmarish enough, but of course it gets worse: "I have to show you something," Tate says, before showing Violet her contorted body, already dead, now a feast for flies. This scene was so intense it even scarred Taissa Farmiga. "They released, I don't know, 5,000 or so flies during that scene. There were so many flies, it was disgusting," she said after the episode aired in 2011. "I was kind of freaking out before I even saw the dead body. I had to get a full head prosthetic, but I told them I didn't want to see it until we shot the actual take. I was really psyching myself out beforehand, and the reaction you see is real."