M. Night Shyamalan?s films tend to exist on the extremes; for many viewers, they are either very good or very bad, with almost no middle ground. After his breakout success with ?The Sixth Sense? and ?Unbreakable,? Shyamalan disappointed moviegoers with dud after dud, including ?The Happening? and ?The Last Airbender.? In the past few years, Shyamalan has made an extraordinary comeback with the one-two punch of ?The Visit? and ?Split.? With ?Glass,? Shyamalan closes a story loop that he started 19 years ago with the critically acclaimed ?Unbreakable.