Beware Boiúna

Beware Boiúna
Theatrical release poster
Directed byMike P. Nelson
Screenplay byAlan B. McElroy
Story by
Produced by
Starring
CinematographyNick Junkersfeld
Edited byTom Elkins
Music byStephen Lukach[1]
Production
companies
Distributed byLionsgate Films (United States) Constantin Film (Germany)
Release dates
  • September 2026 (2026-09) (Fantastic Fest)
  • October 2, 2026 (2026-10-02) (United States)
Running time
104 minutes[2]
CountriesUnited States
Germany
LanguageEnglish

Beware Boiúna is an upcoming survival monster horror film directed by Mike P. Nelson and written by Alan B. McElroy, from a story by McElroy and Tony Giglio. The film stars Kiana Madeira, Jessica Rothe, and Logan Marshall-Green. It follows a medical mission deep in the Amazon rainforest that encounters a colossal mythical serpent.

The film was developed under the working titles Titan and Boiúna: Legend of the Amazon[3] before receiving its final title. It is scheduled to be theatrically released in the United States by Lionsgate on October 2, 2026.

Premise

Deep in the Amazon rainforest along the Curuçá River, a routine humanitarian medical mission turns into a desperate struggle for survival when the group's presence awakens the "Boiúna"—a colossal, ancient mythical serpent determined to reclaim its domain.

Cast

Production

Development

The project was first announced under the working title Titan, bringing together director Mike P. Nelson and screenwriter Alan B. McElroy following their collaboration on the 2021 Wrong Turn reboot. Production later shifted under the working title Boiúna: Legend of the Amazon before being finalized as Beware Boiúna. [8][9]

The film is produced by Robert Kulzer of Constantin Film and Jeremy Bolt of JB Pictures, continuing a collaboration with producers from franchises like Resident Evil.[10]

Writing and Research

The screenplay was penned by Alan B. McElroy with a story co-developed by McElroy and Tony Giglio. The narrative draws heavily from Brazilian folklore, specifically the legend of the Boiúna (or Cobra Grande), a gigantic mythical serpent said to inhabit the Amazon river basin. Director Mike P. Nelson noted that the production aimed to ground the creature feature in realistic stakes, focusing heavily on character development, regional atmosphere, and authentic environmental tension before introducing the massive legacy predator.[11]

Filming

Principal photography took place in Amazon rainforest, requiring the crew and cast—including Madeira, Rothe, and Marshall-Green to shoot around the Amazon River and the jungle regions near Leticia, Colombia.[12] Because of the remote setting and local ecosystem, the production utilized professional animal wranglers on set to protect the cast and crew from potential wildlife hazards, such as venomous and poisonous species native to the Amazon.[13][14]

Release

Beware Boiúna is distributed by Lionsgate Films. The official trailer and promotional rollout debuted in August 2026, featuring viral marketing campaigns.[15][16] The film is scheduled for a theatrical release in the United States on October 2, 2026.[17][18] The film will premiere at the Fantastic Fest on September 2026.[19]

References

  1. ↑ "Stephen Lukach Scoring Mike P. Nelson's 'Beware Boiúna'". Film Music Reporter. 4 August 2026. Retrieved 17 August 2026.
  2. ↑ "Beware Boiuna [14A]". Alberta Film Classification Office. 21 August 2026. Retrieved 21 August 2026.
  3. ↑ Squires, John (17 February 2026). "Mike P. Nelson's Giant Snake Movie 'Titan' Has Been Retitled 'Boiúna: Legend of the Amazon'". Bloody Disgusting. Retrieved 17 August 2026.
  4. ↑ Wiseman, Andreas (13 February 2024). "Kiana Madeira & Jessica Rothe To Star In Survival Thriller 'Titan' For 'Resident Evil' Producers Constantin & JB Pictures; North.Five.Six. Launches For EFM". Deadline Hollywood. Retrieved 17 August 2026.
  5. ↑ O'Rourke, Ryan (12 October 2025). "'Happy Death Day' Star's Upcoming Giant Snake Movie Is the Perfect Companion Piece to Jack Black's 'Anaconda' Reboot [Exclusive]". Collider. Retrieved 17 August 2026.
  6. ↑ T, Amber (13 August 2026). "It's Jessica Rothe Vs A Giant Snake In New BEWARE BOIÚNA Trailer". Yahoo. Retrieved 17 August 2026.
  7. ↑ Faruque, Omar (4 August 2026). "'The Odyssey' Star's New Monster Thriller Officially Revealed in First Look". MovieWeb. Retrieved 17 August 2026.
  8. ↑ Hamman, Cody. "Beware Boiúna trailer unleashes a giant Amazonian snake, and not even Jimothy is safe". JoBlo.com. Retrieved 17 August 2026.
  9. ↑ Boccella, Maggie (5 August 2026). "Jessica Rothe Is In Peril In The Amazon In First BEWARE BOIÚNA Images". Fangoria. Retrieved 17 August 2026.
  10. ↑ Konopka, Matt (12 August 2026). "'Beware Boiúna' Posters Swallow Jimothy and Others Whole". Dread Central. Retrieved 17 August 2026.
  11. ↑ Navarro, Meagan (13 August 2026). "'Beware Boiúna' Trailer Awakens a Colossal Ancient Snake Deep in the Amazon". Bloody Disgusting. Retrieved 17 August 2026.
  12. ↑ De La Fuente, Anna Marie (11 July 2025). "Snakes, Bugs and Lots of Hugs: The Making of Survival Horror Pic 'Titan' in Colombia". Variety. Retrieved 17 August 2026.
  13. ↑ "Mike P. Nelson on Filming Beware Boiuna in the Real Amazon". Grave Stone. 14 August 2026. Retrieved 17 August 2026.
  14. ↑ "Beware Boiúna: New Horror Film Brings Back the Cheese". Stanisland Magazine. 14 August 2026. Retrieved 17 August 2026.
  15. ↑ "Beware Boiuna - Official Trailer". The Times of India. Retrieved 17 August 2026.
  16. ↑ Billington, Alex (13 August 2026). "Scary First Trailer for 'Beware Boiúna' Ancient Amazon Snake Horror". Firstshowing.net. Retrieved 17 August 2026.
  17. ↑ Miska, Brad (8 July 2026). "Lionsgate's Giant Snake Movie 'Titan' Retitled Once Again, This Time to 'Beware Boiúna'; In Theaters October 2". Dread Central. Retrieved 17 August 2026.
  18. ↑ Marc, Christopher (18 February 2026). "Lionsgate's Jungle Creature Feature 'Boiúna: Legend Of The Amazon' Starring Logan Marshall-Green, Jessica Rothe & Kiana Madeira Hits Theaters In 2026". The Playlist. Retrieved 17 August 2026.
  19. ↑ Zilko, Christian (18 August 2026). "Fantastic Fest Unveils 2026 Lineup Headlined by 'Resident Evil', 'Carrie', and 'Wild Horse Nine'". IndieWire. Retrieved 21 August 2026.
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