Horror never goes out of fashion. Trends may shift, box-office prospects may vary, and crazes may come and go, but theres always a market for films designed to scare the bejeezus out of people. With that said, what makes a truly effective horror movie? Well, if you let Johnny Depp's character in Secret Window explain it, "the only thing that matters is the ending." Whether that's true or not, there's no denying the importance of ending on a high note when it comes to the horror genre. Mistakes made in the early moments of a film will always be more easily forgiven than a terrible final minute. Not all stories, however, provide audiences with closure, happy resolutions, and loose ends neatly wrapped in a bow. Some of the best tales reveal jaw-dropping truths, narrative twists, and leave questions that go unanswered to linger in film-goers' minds for years to come. After previously taking a look at some of horror's greatest opening scenes, this list will be shining a light on some of the genres greatest closing sequences - from the Boogeyman proving that's he's quite unkillable to, perhaps, the greatest twist ending in all of cinema. Needless to say, a spoiler alert is in full effect.