Director: M. Night Shyamalan
Starring: James McAvoy, Anya Taylor-Joy, Betty Buckley

Why is this a good movie (at first)?
For an M. Night Shyamalan film, Split actually does the damn thing, especially for James McAvoy, who has to juggle multiple roles...some of which are more sinister than the others. It also gave some stronger roles for women, which can be rare in a thriller.

Why does the ending fuck it up?
In typical M. Night Shyamalan fashion, we get a twist at the end, which included Bruce Willis reprising his role as David Dunn from Unbreakable. If you look at the rest of the film as being a balloon being blown up, the inclusion of Dunn and the callback to Unbreakable (which opened the door for the next movie in his series, Glass) was a needle deflating said balloon.—khal