In only a few days, fans will finally get to see trailer of M. Night Shyamalan's dark superhero film Glass, when it premieres at Comic-Con International in San Diego. But already, we've gotten a few glimpses of the movie. Following a trailer tease highlighting James McAvoy's Kevin Crumb/The Beast, we now have another 15-second tease spotlighting Bruce Willis' Unbreakable character, David Dunn.

The brief teaser features Dunn in action, as he fights crime wearing his signature raincoat. "I'm in security," we hear him say, with specific shots of him on the hunt for bad guys. "He's a mass murderer," he then says. "I have to stop him."

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It's unclear if Dunn is talking about his nemesis, Mr. Glass, or McAvoy's Kevin Crumb, whom he set his sights on in the final scene of 2016's Split. Whatever the answer is, we'll know a whole lot more about Glass when the full trailer is released at SDCC this Friday.

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Directed and written by M. Night Shyamalan, Glass is slated for release Jan. 18, 2019. The film stars James McAvoy as Kevin Wendell Crumb/The Beast, Bruce Willis as David Dunn, Anya Taylor-Joy as Casey Cooke, Samuel L. Jackson as Elijah Price/Mr. Glass and Sarah Paulson as Ellie Staple.