M. Night Shyamalan terrified Universal with Split's twist ending
The twist that brought us Glass scared the hell out of Universal executives

Master of creeps (sweeps and bleeps), M. Night Shyamalan has been scaring audiences for more than two decades with high-concept stories about beaches that make you old. But it was the ending of Split that got some of the loudest screams of his career. Not when it played for general audiences, though. It was when the director shared the shocking ending of the film with Universal. So, if you still haven’t seen Split (which you should because it’s very good) but still want to read this article, please be aware that we’re going to spoil the ending. Though, it’s also very likely that you won’t care at all. So, um, reader, beware.
Split’s surprising ending features the character David Dunn (Bruce Willis), last seen in Shyamalan’s movie Unbreakable, watching Split’s aftermath on TV. The conclusion placed Split in the wider Unbreakable universe, which Shyamalan had hinted at for years. Speaking with the ReelBlend podcast, the director said that when Universal saw a Disney character (Disney imprint Touchstone produced Unbreakable), they freaked.
“I go to the Universal Studios chairman, [the] marketing team, everyone’s in the theater,” Shyamalan said. “We pull down the lights, and we play them Split. They don’t know the ending that they’re watching. They didn’t even know I shot it because I didn’t even send them the dailies,” The lights go down. They watch the whole movie. Then this scene comes on, and they’re completely flummoxed.”