Netflix has released the first teaser trailer for "Below," a six-episode thriller series starring Josh Hartnett, in which a small Newfoundland fishing town is terrorised by a mysterious sea creature. The show marks a notable return to genre television for Hartnett, who also serves as an executive producer, following earlier roles in series such as "Penny Dreadful," "Die Hart" and "Paradise Lost"; it was first announced in February 2025, with Hartnett joining shortly afterwards.

Hartnett plays Calvin Penney, a stubborn fisherman still haunted by his father's mysterious death decades earlier, who teams up with a visiting marine researcher, played by Mackenzie Davis, to confront the creature and uncover the island's buried secrets while protecting his son Wade, played by Charlie Heaton. The cast also includes Ruby Stokes, Kaleb Horn, Rohan Campbell and Willow Kean, with Jesse McKeown serving as creator, showrunner and executive producer alongside Jessica Rhoades, Chris Hatcher, Jamie Childs, Louise Sutton and Sharon Hall. Filmed on location in St. John's, Newfoundland, "Below" will have its world premiere at the Toronto International Film Festival on 10 September 2026 before streaming on Netflix from 8 October 2026.