Below Trailer Sends Josh Hartnett Into a Newfoundland Sea-Creature Mystery — Netflix Series Arrives October 8

Netflix has released the full official trailer for Below, its six-episode Newfoundland thriller starring Josh Hartnett, Mackenzie Davis and Charlie Heaton. The new footage pushes the sea-creature mystery further than July’s teaser did, showing a strange iceberg offshore, escalating danger around the water, and Wade Penney developing symptoms no one can easily explain. All six episodes arrive October 8.

This Isn’t New News — It’s a New Trailer

Netflix confirmed Below’s title, six-episode format, October 8 release date, main cast and first-look photos back in July, followed by a teaser on July 28. September 10’s release is the first full trailer, timed to the show’s world premiere at the Toronto International Film Festival the same day. Nothing about the premise, cast or release date is new here — what’s new is how much more of the story this footage actually shows.

What Below Is About

Josh Hartnett stars as Calvin Penney, a Newfoundland fisherman and single father still haunted by his own father’s mysterious death years earlier. When an unidentified sea creature starts terrorizing his hometown, Calvin teams up with Fonda Howander (Mackenzie Davis), a visiting marine researcher, to figure out what’s actually happening. His son, Wade Penney (Charlie Heaton), gets pulled directly into the mystery as events escalate.

The rest of the confirmed cast includes Willow Kean as Ruth Penney, Ruby Stokes as Mary Penney, Rohan Campbell as Jay Penney, Kaleb Horn as Noah, plus Natasha Henstridge and Mary Walsh.

What the New Footage Shows

The full trailer suggests a mysterious iceberg has drifted toward the Newfoundland coastline, with characters warning each other to stay away from the water. It shows strange events building around the harbor, Wade experiencing disturbing symptoms that alarm his family, and Fonda digging into the biological side of the mystery as panic spreads through the town. The creature itself stays mostly obscured throughout.

What the trailer doesn’t confirm is worth being precise about: Netflix hasn’t stated what the creature actually is, where it came from, or whether the iceberg is definitively connected to it — the footage hints at a link between the two without spelling one out. There’s no confirmation of an alien origin, ancient curse, or parasite, and no indication of what happens to Wade or anyone else. Treat the trailer’s editing as marketing, not confirmed chronology.

Newfoundland Is Central to the Concept

Creator and showrunner Jesse McKeown has pointed to Newfoundland’s rugged coastline, isolation and distinctive tight-knit communities as core to Below’s concept rather than just a backdrop. The series filmed on location in Newfoundland, Canada. Writers include Karen Walton, Perry Chafe and Natty Zavitz alongside McKeown, with Jamie Childs, Helen Shaver and Stephen Dunn directing episodes.

A Limited Series, Not a Season 1

Netflix classifies Below as a limited series — all six episodes are described as arriving together on October 8, not rolling out weekly. There’s no indication from Netflix of a second season or any franchise plan; treat this as a self-contained story until Netflix says otherwise.

Related Coverage

For another Netflix creature story with its own tangled mythology, see our complete breakdown of Vecna’s powers and history in Stranger Things.