Demoni

"They will make cemeteries their cathedrals, and the cities will be your tombs."

—Tagline

Kathy and Cheryl have received free tickets to a new horror movie. Once inside, though, what happens on the screen starts to happen in the theater, after a fellow theater-goer cuts her face on a ceremonial mask on display in the lobby, and before they know it, the cinema is over-run with man-eating demons. Produced by Dario Argento, and directed by Lamberto Bava, son of Mario.

The sequel, released in 1986, takes place a few years after the events of the first film. An apartment complex is taken over by demons after a girl is attacked by one that emerges from a documentary about said demons. The film then follows some of the tenants who attempt to survive.

Tropes used in Demoni include:

Angry Black Man: One of the patrons in the first film who was actually quite cool and helped take action. too bad he dies pretty early.
- The aerobics instructor in the sequel basically takes the exact same role, and is even played by the same actor.
Anyone Can Die
Apocalyptic Log: The documentary in the sequel shows a group of teenagers accidentally reviving a demon and getting killed on-camera.
Apologetic Attacker: The aerobics instructor does this to a mother who is turning into a demon in front of her daughter's eyes before shooting her. The daughter is Asia Argento by the way.
Big Bad: Apparently Sally in the sequel.
Black Dude Dies First: Played straight with Rosemary in the first film, averted in the sequel with Sally, who is white.
Body Horror: The demonic transformations, especially that of the first victim; also, when a transformed girl starts having convulsions, only for a much more demonic-looking, fully-grown monster to erupt from her carcass.
- In the sequel, we're treated to seeing how the demons deteriorate, which includes bleeding acidic blood and their flesh melting away. Another smaller demon erupts from the chest of a child-turned-demon.
Chekhov's Gun: The mask, supposedly found in the tomb of Nostradamus with a prophecy about "the coming of demons" after being unearthed. Needless to say it doesn't take long for it to fire, though.
- Also the red motorbike and sword in the lobby. How nice of them to put them all in one spot.
Chest Burster
Demonic Possession
Despair Event Horizon: Some characters go through this when they found a possible Hope Spot in escaping the theater but it's another dead end.
Dumb Muscle: Some of the clients of the gym in the second film play this straight.
Eye Scream: happens (ironically) to a blind man when the young woman serving as his guide is turned, and shoves her thumbs in his eyesockets. the man still manages somehow to be the first to leave the cinema; unfortunately, that means by the time anyone else gets out the city is overwhelmed by the demons.
The Fourth Wall Will Not Protect You: At the beginning of the second movie, a demon from a movie about a demon contagion becomes aware that it's being watched, and breaks out to start a new outbreak. By the way, you're also watching a movie about a demon contagion...
Gorn
Hope Spot: Several in the first film, the group finding a possible way out only for it to be a dead end. And up until the last minute it seemed like George AND Cheryl were going to at least survive the horror film.
I'm a Humanitarian/To Serve Man: They may or may not be considered "human" once they turn.
Infant Immortality: Averted hard in the second film.
Kill'Em All: In the first film, only George survives, while in the second, only three survive.
Muscles Are Meaningless: In the second film.
Our Zombies Are Different: They're actually under Demonic Possession, and damn fast.
Red Herring: The ticket woman seems like she's part of all that is going on. Turns out she's innocent.
Rule of Scary: Both films take this trope to a total Up to Eleven.
Tainted Veins
The Virus: A single scratch of their claws, teeth or horns, or a single drop of the demons' copious bodily fluids, and you're done for.
Younger Than They Look: The female lead of the sequel, Hannah, is 15. Also, she's the producer's daughter(not that one).
Zombie Apocalypse