There are a few reasons why Split is the perfect title for the new M. Night Shyamalan movie. The most obvious one is the fact it's about a man with multiple split personalities who kidnaps three young girls. The other is that the movie itself is split: 98 per cent of the movie is a good Shyamalan film, which is its own pleasant surprise. But the final 2 per cent is "Oh my God. OH MY GOD."