Thirteen people burned to death in a New Jersey apartment fire in the 1970s. So badly burned that nobody could identify them. They just got put in the ground as numbered graves and that was that. If you handed me that as a horror premise I would be excited about it. I was excited about it. And then 13 Souls happened.
The Setup Deserves Better

Agne is fifteen, she’s found wandering her house while her mother’s body rots nearby, and her estranged father Ariel shows up with her older sister Nina to deal with the fallout. The family is already fractured before anything supernatural touches it. Agne was abducted as a kid. Dad wasn’t around. There’s damage here that predates the ghosts. That’s exactly the kind of emotional groundwork possession horror needs to work, the sense that the evil is filling in cracks that were already there.
Director Paulo Nascimento clearly understood all of this on paper. His earlier festival work suggests a filmmaker who thinks carefully about atmosphere and grief. There are moments early in 13 Souls where you can feel that instinct operating. The estrangement between these three people has a specific, uncomfortable texture. Nobody knows how to stand in a room together. It’s good.
It doesn’t last.
Sienna Belle Is Working Harder Than the Script

She’s playing possessed, and she’s not doing the thing where actors seem to be enjoying themselves too much. There’s something flat and unreachable about her in the right scenes. It is like watching someone try to have a conversation through thick glass. It’s effective, and it’s wasted. This happens because the screenplay keeps yanking focus to deliver more mythology when what the movie actually needs is to stay with her face for another thirty seconds.
Tim Shelburne gets a few scenes as the guilty father that have some real weight to them. Brielle Tucker does solid work as the sister. These are not bad performances trapped in a bad movie. They’re okay performances trapped in a movie that doesn’t know what to do with them once the haunting kicks into second gear.
Looks the Part, Paces Like a Problem

Nascimento shoots this well enough that it’s almost more frustrating. The cemetery is used in ways that feel considered rather than just atmospheric wallpaper. Some of the fire imagery connecting the 1970s backstory to the present actually works. There are maybe four shots in this movie that made me sit up a little.
The pacing undoes all of it. 13 Souls cannot figure out how fast it wants to move, and the result is a film that lurches. Scenes that need room to breathe get cut short. Expository scenes that should be quick drag on. The rhythm is just off, consistently, in a way that makes it hard to stay inside the tension even when the tension is doing what it’s supposed to do.
This is a slow burn movie directed by someone who keeps second-guessing the slow burn. Every time the dread starts to accumulate 13 Souls interrupts itself. Talk to Me built an entire suffocating atmosphere out of patience and commitment to a bad idea made viscerally real. Hereditary let the grief metastasize until the horror felt like the only possible outcome of all that damage. 13 Souls glances in that direction and then cuts to a jump scare because apparently it got nervous.
Final Verdict

Possession horror is not a genre with a lot of patience left for competence without vision. The shelf is crowded and getting more crowded and the movies that cut through right now are the ones that use the mechanics to say something specific, Smile drilling into trauma responses, The Black Phone building horror around something that actually happened to kids. 13 Souls has the bones of a movie like that and spent its running time being a movie like most other ones.
Sienna Belle is good in it. Some of it looks nice. The premise deserved more and so did the cast.
13 Souls is on digital now via Seven Tales.