The final trailer for the upcoming “Glass” has been released today and it promises yet another twist to the story established in “Unbreakable” and its surprise semi-sequel / spin-off “Split”. The film, written and directed by M. Night Shyamalan (who has been hard at work to regain his director reputation) will continue the stories of the unbreakable David Dunn, not so unbreakable but very intelligent Mr. Glass, and multi-personality maniac Kevin Wendell Crumb. Bruce Willis, Samuel L. Jackson and James McAvoy will be joined on-screen by Sarah Paulson who plays a Dr. Ellie Staple: a psychiatrist specializing in delusions of grandeur who treats patients convinced that they are superhumans. We’re really curious what Shyalaman has in store for us. Here’s the trailer.