Netflix releases the first teaser for the six-episode thriller series “Below,” starring Josh Hartnett. Across the trailer, a small seaside town is shown facing escalating danger from a mysterious sea creature that attacks and terrorizes residents. The teaser also suggests the plot includes long-buried secrets, which unfold as the threat from the water grows. “Below” is presented as a thriller with a sea-monster premise, combining suspense and unfolding revelations tied to the town’s past. The series’ world premiere is scheduled as part of the Primetime program at the Toronto International Film Festival (TIFF) in 2026. While the outlets preview the concept and tone through their coverage of the teaser, details about specific characters, the origin of the creature, and how the town’s secrets connect to the monster are not fully established in the provided summaries. The release of the teaser marks Netflix’s first public look at the series ahead of its festival premiere.