glass is a 2019 american psychological superhero thriller film written and directed by m. night shyamalan, who also produced with jason blum, marc bienstock, and ashwin rajan. the film is a crossover and sequel to shyamalan's previous films "unbreakable" (2000) and "split" (2016), serving as the final installment in the "unbreakable" trilogy a.k.a. "eastrail 177 trilogy" bruce willis, samuel l. jackson, spencer treat clark, and charlayne woodard reprise their "unbreakable" roles, while james mcavoy and anya taylor-joy return as their "split" characters, with sarah paulson, adam david thompson, and luke kirby joining the cast.