- Alternate Character Interpretation: Was the Devil unable to take Tony because he was sorry, or because Bowden, the person he'd hurt most, forgave him?
- Bile Fascination: Much of the audience was drawn in by (negative) word of mouth of how entire theatres burst into laughter at the sight of "Produced by M. Night Shyamalan" coming on during screenings of its trailer.
- Broken Base: Reception on the movie's quality is split between those that felt that this movie was at least a return to form for Shyamalan (but not as good as his earlier work) and those that felt it was just another nail in Shyamalan's career coffin.
- Director Displacement: Shyamalan only wrote and produced the film, yet it has all the hallmarks of a Shyamlan film.
- Dork Age: Still sports many of the tropes to be negatively associated with Shyamalan, and the aforementioned reaction of audiences to his involvement served to signal the director's loss of goodwill as a result of his previous efforts.
- Hilarious in Hindsight: Both Shockers from Spider-Man: Homecoming (Logan Marshall-Green and Bokeem Woodbine) appear in this film.
- "Tuhur-non the lighights~~!" Justified by the situation, but man...
- The demonstration of "jelly side down" toast. It's supposed to be a tense moment as the one security guard explains the presence of the devil. It's still a slow-motion shot of jelly-on-toast falling.note
- The claim that suicide notes are either all crazy or all rational. This is supposed to sound like the note they're reading is a dramatic exception. Instead, it sounds like a gross oversimplification of a complex and incredibly sensitive issue.
- The final conversation between the cop and the guy who killed his family.
- Retroactive Recognition: The detective is Danny Castellano
- So Bad, It's Good: Watch it with friends in the right frame of mind and sufficient intoxication, and it really is hysterically funny. Prime future MST type commentary material. See the What an Idiot! and Narm entries for examples.
- They Wasted a Perfectly Good Plot: A great murder mystery in a confined setting with a Race Against the Clock theme to get the remaining people out before they're killed... and then they had to throw in the supernatural elements.
- To be fair, the supernatural thing is established pretty early on. And a mortal killer would only make sense if the killer somehow controlled the lights and didn't really care about getting caught.
- As mentioned by the Nostalgia Critic, having the Devil's identity be both almost completely foreshadowed and one of the suspects who died means there was no way for a viewer to actually solve the mystery so all they have to look forward to is the twist. Instead, it could have been revealed to be the security guard since he both isn't someone you'd easily suspect but there are still clues that point to him when you look back. He's the one who gives everyone the idea that the Devil is present in the first place, he's strangely and accurately familiar with the Devil information when no one else has heard of these specific superstitions, he has free constant surveillance of the elevator, and actions like suddenly saying a hasty Spanish prayer over the speaker would clearly only create more panic but gives him plausible deniability that he was trying to help.
- What an Idiot!:
- Most of the people in the elevator, but one can write that off as stress.
- Special credit goes to the security guards, who take way too long to call the police or the fire department to get the trapped people out, when in real life, calling both would be the first thing you would do after determining that the elevator couldn't simply be turned back on. They also mention that the elevator company had gone out of business. This naturally does happen in real life, and when it does, a company would be scrambling to get in contact with a new company, because not having an elevator company insuring you is a wonderful way to be sued out of existence.
- The guard who believes in the devil at one point drops to his knees, closes his eyes, and begins reciting a Hail Mary in front of the security monitors. Not only is he actively ignoring high strung claustrophobic murder suspects trapped in an elevator with each other, he recites the Hail Mary over the radio so that said trapped claustrophobic murder suspects can hear him. He is doing in Spanish, which thankfully none of them understand, but it still freaks them out. In fairness, though, he was convinced one of the people in the elevator was the devil. Looking at the screen wouldn't stop the devil from killing people, and in fact didn't stop the devil from killing people. He did basically the only thing he personally could do at that moment: pray to God for forgiveness and mercy.
- Makes most sense if you think the guard is supposed to be an incarnation of God or Christ attempting to give the cop a chance to save his own and the trapped peoples' souls. In that case it's mostly Narm.
- Oh look, a high voltage wire is broken. Why don't I step in the water so I can reach a little further with a stick? Extra points because he had made a conscious effort to avoid the water, then changed his mind because he needed to reach a little further. It gets really bad when you notice there's a 4-inch tall wooden crate bed leaning against the wall which he could have easily laid over the puddle to avoid touching the water.
- And he was trying to hang the exposed wire on a nail embedded in a metal framework! From a safety perspective he was not in a "be super careful" situation. He was in a "turn all the power off" situation.
- Then there are the cops who presumably know how the main cop's family were killed and allow him to drive off, alone, with the man who has just admitted to committing the hit and run.
YMMV / Devil