When Netflix announced on August 19, 2019, at the Copenhagen TV Festival that The Chestnut Man would become its second Danish original series, Nordic noir fans felt the chill of anticipation. Based on the acclaimed debut novel by Søren Sveistrup—creator of the iconic The Killing—this gritty thriller promised to bring a fresh dose of Scandi darkness to the global streaming stage. Fast forward to its premiere on September 29, 2021, and it delivered: a six-episode plunge into murder, mystery, and chestnut figurines that’s since carved out a cult following. So, how did this twisted tale make the leap from book to Netflix hit, and what’s next? Let’s unravel it.

The story starts with Sveistrup’s 2018 novel, The Chestnut Man (Kastanjemanden), a 500-page beast translated into 28 languages and published in 50 countries. It’s set in a quiet Copenhagen suburb where detectives Naia Thulin and Mark Hess hunt a serial killer leaving chestnut dolls at gruesome crime scenes—each tied to the disappearance of a politician’s daughter, Kristine Hartung. Critics raved: The Times called it “twisty, tricksy,” and the New York Journal of Books dubbed it “dripping with atmosphere.” Netflix saw the potential early, snapping up the rights to adapt this standalone tale into a character-driven thriller rooted in the Nordic noir tradition.

Production kicked off in 2020, helmed by SAM Productions—the Danish outfit behind Ragnarok—with Sveistrup co-writing alongside Dorte Warnøe Høgh, David Sandreuter, and Mikkel Serup (who also co-directed with Kasper Barfoed). Tesha Crawford, Netflix’s Director of International Originals for Northern Europe, hyped it up in 2019: “We were instantly compelled by the strong story and Søren’s voice.” Filming took place in Copenhagen, capturing the city’s autumnal gloom, with a budget hefty enough to nail the moody visuals and intricate sets—a farmhouse massacre in 1987, playground slayings in the present. The cast locked in Danica Curcic (Thulin) and Mikkel Boe Følsgaard (Hess), both vets of prior Danish Netflix hits (Equinox and The Rain), alongside Iben Dorner as Rosa Hartung and David Dencik as the forensics guy with secrets, Simon Genz.

The series dropped worldwide on September 29, 2021, and hit hard. It racked up over 100 million hours watched globally in its first five weeks, per Netflix’s top 10 non-English charts, and snagged a rare 100% on Rotten Tomatoes for Season 1. Viewers on X called it “tense, emotional, and honestly frightening” (Stylist), while Forbes dubbed it “creepy and moody.” The six 50-minute episodes followed the book closely—Genz’s revenge arc, Kristine’s rescue, the chestnut dolls as calling cards—wrapping up with a poetic crash that left no loose ends. A perfect binge, but a second season? Seemed unlikely with the story so neatly tied.

Then came the twist. On March 18, 2024, Netflix dropped a bombshell in its Nordics slate reveal: The Chestnut Man was renewed—not for a Season 2, but a “standalone sequel series” slated for 2026. Curcic and Følsgaard return as Thulin and Hess, joined by Sofie Gråbøl (The Killing) and Katinka Lærke Petersen. This time, it’s a new case, no novel to lean on, with writers Emilie Lebech Kaae and Høgh crafting an original plot under Milad Alami’s direction. A teaser hints at a post-Chestnut Man fallout—Thulin and Hess tried dating, it flopped, and now they’re back, chasing a new killer with “unresolved feelings” simmering. Production’s underway, delayed from an earlier 2025 target, but Netflix’s betting big on this next chapter.

From novel to series to sequel, The Chestnut Man’s journey proves Netflix’s knack for turning Nordic noir into global gold. Season 1’s success—12.4 million hours watched in early 2023 alone, per Netflix’s Engagement Report—shows it’s more than hype. Will the sequel match the original’s chill factor? Fans are already counting down to 2026.