Josh Hartnett Faces a Sea Monster in Netflix Thriller Series ‘Below’
Josh Hartnett is heading into dangerous waters in Netflix’s upcoming thriller series Below, which has unveiled its first teaser trailer.
The six-episode series follows a small Newfoundland community thrown into turmoil when a mysterious sea creature begins terrorizing the town. Hartnett stars as a fisherman forced to confront the threat while dealing with secrets tied to his family and the community’s past.
Below will make its world premiere as part of the Primetime program at TIFF 2026 on Sept. 10. Netflix will release the series on Oct. 8.

A Fisherman Confronts a Mysterious Creature
Hartnett plays Calvin Penney, a stubborn but warm-hearted fisherman living in a close-knit Newfoundland town. Calvin has spent decades carrying the unresolved mystery surrounding his father’s death.
His life takes a dangerous turn when an unidentified creature emerges from the sea and begins threatening the community.
With his son Wade, played by Charlie Heaton, and the rest of his family at risk, Calvin joins forces with a visiting marine researcher, portrayed by Mackenzie Davis. Together, they attempt to stop the creature while uncovering long-buried secrets connected to the island.
The cast also includes Ruby Stokes, Kaleb Horn, Rohan Campbell, and Willow Kean.

From the Team Behind ‘Below’
Netflix first announced Below in February 2025, with Hartnett joining the project soon afterward. The actor is known for roles in series including Penny Dreadful, Die Hart, and Paradise Lost.
Jesse McKeown created the series and serves as showrunner and executive producer. Hartnett is also an executive producer alongside his starring role.
Jessica Rhoades executive produces through Pacesetter. Chris Hatcher, Jamie Childs, Louise Sutton, and Sharon Hall are also executive producers.
The series was filmed on location in St. John’s, Newfoundland, Canada, giving the story a real-world coastal setting for its supernatural threat.
Below premieres at TIFF 2026 on Sept. 10 before arriving on Netflix Oct. 8.