Mia McKenna-Bruce, Martin Freeman, and Helena Bonham Carter have signed on to star in The Seven Dials Mystery, according to a Variety report. The series for Netflix is described as an interpretation of Agatha Christie's eponymous novel. This is the first major role in the career of McKenna-Bruce, who is known for playing Tara in the 2023 film How to Have Sex, which won the Un Certain Regard award at the Cannes Film Festival.

The series is written by Chris Chibnall, best known as the showrunner of Doctor Who and the writer of Broadchurch, and directed by Chris Sweeney. The plot revolves around a lavish party at a country house in which a prank contributes to a murder. Ultimately, it becomes the task of McKenna-Bruce's detective Lady Eileen “Bundle” Brent to solve the mystery. Freeman and Bonham Carter appear alongside McKenna-Bruce as Superintendent Battle and Lady Caterham, respectively.

Suzanne Mackie is executive producing the series for Orchid Pictures, alongside Chibnall for Imaginary Friends, James Prichard for Agatha Christie Limited, Chris Sussman, and Andy Stebbing. On the other hand, Joanna Crow is producing it.

The Seven Dials Mystery is set to go on floors later this year.