Netflix Taps Mia McKenna-Bruce to Lead Agatha Christie’s The Seven Dials Mystery

Streaming giant Netflix is set to debut a three-part limited series adaptation of Agatha Christie’s classic novel, *The Seven Dials Mystery*. Headlining this highly anticipated period drama is Mia McKenna-Bruce, an acclaimed rising star. McKenna-Bruce recently garnered significant industry recognition, including the prestigious British Independent Film Award, for her compelling performance in the film *How to Have Sex*. Securing the lead role in this major production further cements her position as one of the most promising talents currently working in contemporary cinema.

The narrative transports viewers to England in 1925, immersing them in a world defined by glamorous country house parties and complex social maneuvering. The central plot is triggered by what initially appears to be a harmless prank played during a social gathering, but which rapidly spirals into a dangerous, fatal conspiracy. McKenna-Bruce takes on the pivotal role of Lady Eileen Brent, known affectionately as "Bundle." Driven by an inherent "sparkling curiosity," Bundle is incapable of ignoring injustice or mystery, forcing her to seize control of the investigation herself. The portrayal demands that the actress showcase both sharp dramatic ability and the spirited, inquisitive nature central to the character.

The ensemble cast features several established names lending weight to the production. Veteran actress Helena Bonham Carter is slated to portray Lady Caterham, while Martin Freeman steps into the shoes of the iconic Inspector Battle. The screenplay draws directly from Agatha Christie’s 1929 novel, also titled *The Seven Dials Mystery*. The original literary tragedy is set in motion by a practical joke involving eight alarm clocks, intended to rouse the notoriously heavy sleeper, Jerry Wade. When one of the eight clocks vanishes and Wade is discovered deceased—believed to be the result of an overdose of sleeping pills—this shocking incident serves as the catalyst. It compels Bundle Brent to launch her own perilous inquiry, ultimately uncovering the existence of the clandestine organization known only as "The Seven Dials."

Guiding the adaptation of this beloved classic is Chris Chibnall, renowned for his critically acclaimed work on the series *Broadchurch*. Chibnall’s involvement suggests the project will deliver a sharp, contemporary perspective while honoring the source material. Directorial duties are handled by Chris Sweeney. Filming commenced in Summer 2024, utilizing picturesque locations across the UK and Europe, specifically Bristol, Bath, and Ronda, Spain. Fans of period mysteries can mark their calendars: the highly anticipated miniseries is scheduled to premiere globally on Netflix on January 15, 2026. This production is poised to offer more than just a crime resolution; it promises an engaging and immersive journey back into the distinctive world created by Agatha Christie and her memorable characters.