Filmmaker Mike Flanagan, known for horror hits like "The Haunting of Hill House," is in negotiations to join the upcoming "Warhammer 40,000" television series as an executive producer, according to sources close to the project. The series, based on the popular tabletop miniature wargame, is being developed by Amazon MGM Studios with Henry Cavill attached to star and produce. Flanagan's involvement would see him contribute to script work on the adaptation, Games Workshop, the company behind the Warhammer franchise, confirmed. Flanagan's potential role comes as he prepares to release his adaptation of Stephen King's "Carrie" on Prime Video on October 7. The "Warhammer 40,000" series is part of Amazon's broader push into genre content, with Cavill having long been a fan of the game. No official casting or production timeline has been announced, but Flanagan's addition signals a major creative boost for the project. The series aims to bring the grimdark universe of Warhammer 40,000 to life, exploring its vast lore and epic battles. Flanagan's track record with atmospheric storytelling and character-driven horror makes him a fitting choice for the franchise's dark themes.