Bam! Pow! Wham! These are all the sound effects I was expecting to hear when I walked into the theater. The “superhero” movie I got instead had a severe lack of fun costumes and witty one-liners.

Writer and director M. Night Shyamalan’s “Glass” takes the main characters from two of his past movies, “Unbreakable” and “Split,” and mashes them together in a wild jumble of storylines in order to form the final movie in his superhuman trilogy. While this seems like an interesting concept, the film’s star cast was the only thing that kept the movie afloat after the mediocre writing and lazy plot.

From “Unbreakable,” Shyamalan steals David Dunn (Bruce Willis), a super strong man who can see visions by making physical contact with others and Elijah Price/Mr. Glass (Samuel L. Jackson), a genius with bones so brittle they’ll break from the slightest contact.

The next all-star member of the cast is the one and only James McAvoy, best known for his role as the young Charles Xavier in the X-Men series. He played Kevin Wendell Crumb, as well as his other subsequent personalities, in Shyamalan’s other film, “Split,” a movie about a kidnapper with multiple personality disorder. The most hostile personality being “The Beast” who only comes out after Crumb takes his shirt off. If that sounds weird, it’s because it is.

The best part of this movie for me was the acting of James McAvoy. His ability to switch between personalities and seem like a completely different person with just a change of accent and body language was incredible.

All of these characters are thrown together in a fruitless attempt at making the two movies connect to each other. However, it’s obvious that the two weren’t originally meant to end together in a final movie, considering “Unbreakable” came out in 2000 and “Split” was released in 2016. The only actual tie to “Unbreakable” in “Split” came in the last 2 minutes of the movie and it felt like they were just thrown in there in a futile attempt at making “Unbreakable” relevant again.

The movie starts with Dunn facing off against Crumb when he finds the four cheerleaders that Crumb has kidnapped. Their face-off leads to their capture by Dr. Ellie Staple (Sarah Paulson), a scientist who specializes in people who think they have superpowers. Pretty convenient, right?

She takes them to a mental hospital where she tries to convince the two men, as well as Mr. Glass who was already a patient there, that they aren’t special and that their powers are all in their heads. The only one she seems to get through to is Dunn who then begins to question everything he’s ever been able to do.

One of the biggest letdowns was Samuel L. Jackson’s character, Mr. Glass. He was the main focus of the trailer and didn’t even show up until an hour into the movie. Even after he finally graced the screen, he spent most of the time in a half comatose state with zero lines.

As someone who didn’t see the first movie in the trilogy, this one didn’t offer up much backstory or explanation for the foundation of this movie. The advertising for the film didn’t really allude to it being part of a series and I spent most of the time completely confused as to what was going on and why it mattered.

There wasn’t much to keep the audience interested either. Between the long lapses in activity and lack of a fully formed storyline, it was a bit of a snooze. The only action in the entire movie was in the very beginning and the very end, making for a very long and drawn out middle.

This trilogy probably would have been better off if it would have stayed two separate, barely connected movies.