Beware Boiúna
Upcoming survival horror film about a mythical Amazon serpent.
Deep in the Amazon rainforest, a humanitarian medical team along the Curuçá River stumbles into a nightmare when their arrival stirs the Boiúna—an enormous ancient serpent from local legend that rises to take back its territory. This survival horror film, directed by [Director TBD] and written by [Screenwriter TBD] from a story by [Story TBD], stars [Cast TBD]. It was initially developed under the working titles [Working Titles TBD] before settling on *Beware Boiúna*. The cast also includes [Additional Cast TBD]. Production is led by Robert Kulzer of Constantin Film and Jeremy Bolt of JB Pictures, continuing their work together on franchises like *Resident Evil*. The screenplay draws from Brazilian folklore, particularly the Boiúna (or Cobra Grande), a gigantic mythical snake said to haunt the Amazon basin. The director aimed to ground the creature feature in realistic stakes, emphasizing character development, regional atmosphere, and environmental tension before introducing the massive predator. Principal photography is planned for the Amazon rainforest, with the cast and crew expected to shoot near the Amazon River and jungle areas around Leticia, Colombia. Due to the remote setting and local ecosystem, professional animal wranglers are expected to be brought in to protect everyone from venomous and poisonous wildlife. Distributed by Lionsgate, the film is set for a U.S. theatrical release on [Release Date TBD], following a premiere at Fantastic Fest in [Month TBD] 2026. The official trailer and promotional campaign are expected to launch in [Month TBD] 2026.
Quick Facts
- Director
- Mike P. Nelson
- Screenplay
- Alan B. McElroy
- Story
- Alan B. McElroy / Tony Giglio
- Producer
- Jeremy Bolt / Robert Kulzer
- Starring
- Kiana Madeira / Jessica Rothe / Logan Marshall-Green
- Cinematography
- Nick Junkersfeld
- Editing
- Tom Elkins
- Music
- Stephen Lukach
- Studio
- Constantin Film / JB Pictures
- Distributor
- Lionsgate Films (United States) / Constantin Film (Germany)
- Released
- 17 September 2026 · Fantastic Fest · 2026 · 10 · 2 · United States
- Runtime
- 104 minutes
Facts from the source article.
Lore & Background
The project was first announced under the working title [Working Title TBD], bringing together director [Director TBD] and screenwriter [Screenwriter TBD]. Production later shifted under the working title [Working Title TBD] before being finalized as *Beware Boiúna*. 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*.
The screenplay was penned by [Screenwriter TBD] with a story co-developed by [Story TBD]. 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. The director noted that the production aims 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.
Principal photography is planned for the Amazon rainforest, requiring the crew and cast—including [Cast TBD]—to shoot around the Amazon River and the jungle regions near Leticia, Colombia. Because of the remote setting and local ecosystem, the production is expected to utilize professional animal wranglers on set to protect the cast and crew from potential wildlife hazards.
Reader's Guide
Beware Boiúna represents a contemporary entry in the survival monster horror genre, drawing on Brazilian folklore to create a creature feature set in the Amazon rainforest. The film's development under multiple working titles—Titan and Boiúna: Legend of the Amazon—reflects its evolution from concept to final form. Its significance lies in its attempt to ground supernatural horror in realistic stakes, emphasizing character development and environmental tension before introducing the mythical serpent. The production's remote filming in the Amazon and use of professional animal wranglers highlights the logistical challenges of shooting in a hazardous ecosystem. Scheduled for a theatrical release by Lionsgate on October 2, 2026, and a premiere at Fantastic Fest in September 2026, the film continues the collaboration of director Mike P. Nelson and screenwriter Alan B. McElroy from the 2021 Wrong Turn reboot. Its reliance on authentic regional atmosphere and Brazilian legend positions it as a culturally rooted horror film within the broader monster movie tradition.
Did You Know?
- The film was developed under the working titles Titan and Boiúna: Legend of the Amazon before receiving its final title.
- Principal photography took place around the Amazon River and jungle regions near Leticia, Colombia.
- The production used professional animal wranglers to protect cast and crew from venomous and poisonous species native to the Amazon.
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