Millie Bobby Brown and David Harbour are set to reunite for the upcoming spy thriller *The Thursday Murder Club*, directed by Chris Columbus. While social media reports previously speculated about a project titled *Spy in the Blood*, official production announcements confirm the duo is joining the ensemble cast of this Netflix adaptation, based on the bestselling novel by Richard Osman.
Who is joining the cast of The Thursday Murder Club?
Beyond the reunion of the *Stranger Things* stars, Netflix has confirmed a high-profile ensemble for *The Thursday Murder Club*. According to the official announcement from [Netflix’s Tudum](https://www.netflix.com/tudum/articles/the-thursday-murder-club-cast-director), the film features Helen Mirren, Ben Kingsley, Pierce Brosnan, and Celia Imrie as the core group of retirees who solve cold cases. David Harbour and Millie Bobby Brown are joining the cast in supporting roles, marking their first onscreen collaboration outside of the Duffer Brothers’ sci-fi hit. The film is currently in production in the United Kingdom.
What is the premise of the film?
The story follows four unlikely friends living in a peaceful retirement village who meet weekly to investigate unsolved murders. When a local property developer is found dead, the group—Elizabeth, Joyce, Ibrahim, and Ron—finds themselves in the middle of their first live case. The screenplay is written by Chris Columbus, who also serves as director. The project is produced by Jennifer Todd through her banner, Todd Films, with Amblin Entertainment.
Why does this project matter for the actors?
For Millie Bobby Brown and David Harbour, this project serves as a bridge between their long-running roles as Eleven and Jim Hopper. While *Stranger Things* is currently filming its fifth and final season, both actors have pursued independent film projects.
* David Harbour: Known for his work in the Marvel Cinematic Universe and *Violent Night*, Harbour’s involvement in a British-led mystery ensemble highlights his transition into character-driven dramatic roles.
* Millie Bobby Brown: Following her success in the *Enola Holmes* franchise, Brown continues to work closely with Netflix. This role represents a shift toward ensemble-led storytelling compared to her recent lead roles in films like *Damsel*.
What is the status of the “Spy in the Blood” rumors?
Industry tracking and entertainment news outlets, including *Deadline*, have clarified that there is no verified project titled *Spy in the Blood* currently in development involving Brown and Harbour. The confusion appears to have stemmed from online speculation misidentifying the pair’s next collaboration. *The Thursday Murder Club* is the only project currently confirmed by Netflix that reunites the two actors.
Key Details
* Director: Chris Columbus
* Platform: Netflix
* Source Material: Richard Osman’s *The Thursday Murder Club* novel
* Status: In Production
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