Netflix has revealed the teaser trailer for Below, the new thriller series coming to the streaming service on October 8, 2026. In Below, Calvin Penney (Josh Hartnett) is a big‑hearted but stubborn fisherman living in a small Newfoundland town who’s still haunted by his father’s mysterious death from decades ago. When an unidentified sea creature begins terrorizing his hometown, Calvin must fight to hold his close-knit community together. The cast includes Josh Hartnett (Calvin Penney), Mackenzie Davis (Fonda Howander), Charlie Heaton (Wade Penney), Ruby Stokes (Mary Penney), Kaleb Horn (Noah), Rohan Campbell (Jay Penney), and Willow Kean (Ruth Penney). The executive producers also include Jessica Rhoades, Chris Hatcher, Josh Hartnett, Jamie Childs, Louise Sutton, and Sharon Hall.