James McAvoy has multiple personalities in the trailer for M. Night Shyamalan’s Split

James McAvoy gets his United States Of Tara moment and it goes seriously wrong in the trailer for Split, M. Night Shyamalan’s latest. The movie stars McAvoy as Kevin, a dude with multiple personality disorder who kidnaps a trio of pretty teens. One of the young women is played by The Witch’s Anya Taylor-Joy, clearly…