Last year, M. Night Shyamalan's SPLIT ended with a surprise tie-in to his comic-book superhero homage Unbreakable, which led to an announcement that his followup film GLASS would further connect the two films.

Now we finally have our first look at what Shyamalan calls "the first fully grounded superhero movie". The trailer introduces Dr. Ellie Staple (played by Sarah Paulson), a psychiatrist who specializes in “those individuals who believe they are superheroes,” addressing Bruce Willis’ Unbreakable character David Dunn, Kevin Crumb’s various personalities, and Samuel L. Jackson’s Mr. Glass. The three characters have come together in a hospital under her skeptical supervision for treatment. Jackson’s titular character seems to be at the center of the film, saying he wants the rest of society to know that people like him exist, and meeting the Beast — the monstrous personality that became Split’s primary antagonist — for his own sinister ends.

GLASS opens in cinemas Jan 17 2019: