Daily Archives: October 5, 2026

Movie Review: Beware Boiúna

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Friday night, with a hankering to see something in the theaters to kick off this year’s spooky season, I did something I have not done in a very long time: I saw a movie knowing so little about it I had not even watched a trailer. Scanning through the AMC app on my phone, I read the bare details about Beware Boiúna: “deep in the Amazon, a medical mission spirals into a fight for survival when Boiúna, a colossal ancient predator, awakens to reclaim her domain in the jungle were nature holds absolute power, she decides who lives and who dies.”

Lionsgate Films

Okay, so Beware Boiúna was a creature feature, a monster movie, and frankly that was just the sort of shallow horror film that suited my mood. I clicked on a show time, confirmed it as one of the subscription screenings, which came at no additional cost, and after my sweetie-wife had retired for the evening, drove to Fashion Valley mall for the film. I seated myself in the nearly empty theater with quite low expectations. Monster movies along with slashers are not known for deep and engaging stories, often populated by caricatures of people rather than characters, and ones that make the most idiotic of decisions. This sub-genre can be fun in a silly, campy sort of way. (Though it is possible to be just bad enough that the movie is painful to watch without any redeeming camp value.)

Beware Boiúna surprised me.

While it clearly does not carry the heft of more celebrated recent horror films such as Obsession, Backrooms, Midsommar, or Nosferatu, this movie is smart enough and entertaining enough to be counted among the rare category of good monster movies. It possesses just enough story within its plot to have something to say about the human condition but without becoming a meditation on grief, or loss, or identity.

The plot of the film is straightforward: a team of doctors and medical students travel by chartered boat deep along the Amazon River in Colombia, delivering medical supplies and care to impoverished villages. The team comes into conflict with a commercial survey/prospecting team which rapidly spirals into violence. When both groups find themselves on an isolated tributary, they are forced to reckon with a serpent of gigantic stature, Boiúna, and it is unclear who, if anyone, will survive.

In my opinion, Beware Boiúna, while not reaching the heights of these films, carries the genetic heritage of three great films of the horror canon: Jaws, Alien, and Aliens.

Like that Spielberg classic Jaws, this film doesn’t overexpose the audience to the monster at the center of the story. Boiúna makes her appearances in the first half of the movie without fully exposing her horrific nature. Like ‘Bruce’ the shark, her presence is represented by the things she affects instead of blatant CGI. It isn’t until the final act of the film that the creature is fully seen and even then, the director, Mike P. Nelson, and the VFX teams wisely restrict these scenes to the forgiving nature of well-shot night sequences.

Alien is famous for hiding just which character is the actual protagonist of the tale. It isn’t until Dallas’ foray into the airshafts that it becomes clear that Ripley is the story’s main character. Beware Boiúna performs a similar sleight of hand, revealing its protagonist at the film’s midpoint.

The connection to Cameron’s Aliens is more tenuous but struck me as plain when our surviving protagonist battles the enormous creature with massive claw-equipped machinery, echoing Ripley’s power-loader battle with the alien queen.

Well-directed by Mike P. Nelson and well-scripted by writer Alan B. McElroy, Beware Boiúna is a rare thing, a rather decent creature feature that doesn’t try for too much or overstay its welcome with a slim 104-minute running time. Cinematographer Nick Junkersfeld shot the film well; there are no overly showy flourishes of photography but rather a simple and direct style that helps ground the fantastic premise.

Overall, I found this film worth my time, and while it is not getting as wide a release as it deserves and will be overshadowed by films such as Obsession, Beware Boiúna is a film that horror fans should see, and if possible, in a theater.

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