Scary First Trailer for ‘Beware Boiúna’ Ancient Amazon Snake Horror​

“If we don’t leave here now, we all die!” 🐍 She’s coming and she’s pissed! Lionsgate has revealed an official trailer for the horror movie Beware Boiúna, a survival thriller about a massive gigantic snake in the rain forest, made by filmmaker Mike P. Nelson. Since the recent Anaconda remake turned out to be a big pile of junk, this new horror movie seems to be the proper modern update on Anaconda about a giant snake in the Amazon. Though they’re describing it as a “colossal ancient predator” instead of just a snake. Sure, why not? A team of doctors embark on a local mission in the Amazon rain forest, but it soon becomes clear that not everybody – or everything – is happy to see them. Their recent appearance draws the attention of an animal predator, the “Boiúna.” In the jungle where nature holds absolute power, she decides who lives and who dies. Beware Boiúna stars Kiana Madeira, Jessica Rothe, and Logan Marshall-Green. This is hitting theaters in October just in time for the horror season. Looks intense! I just hope it’s actually properly scary.

Here’s the first official trailer (+ poster) for Mike P. Nelson’s horror Beware Boiúna, from YouTube:

“Witness terror on a gigantic scale.” 🐍 Deep in the Amazon rainforest, a medical mission spirals into a fight for survival when Boiúna, a colossal ancient predator, awakens to reclaim her domain. In the jungle where nature holds absolute power, she decides who lives and who dies. Beware Boiúna is a horror movie directed by the American genre filmmaker Mike P. Nelson, a former sound mixer and director of the films Summer School, The Domestics, Wrong Turn, and Silent Night, Deadly Night previously, plus a segment in V/H/S/85 and other horror shorts. The screenplay is written by Tony Giglio, Alan B. McElroy, and Mike P. Nelson. Produced by Jeremy Bolt & Robert Kulzer. Lionsgate debuts Nelson’s Beware Boiúna horror film in US theaters starting October 2nd, 2026 coming up this fall during the horror season. Look scary or not?

Read more posts in: Horror, To Watch, Trailer