A new addition is arriving on January watchlists: a stylish, nostalgic murder mystery adapted from Agatha Christie’s The Seven Dials Mystery. The series follows Bundle, a young woman determined to uncover the truth behind a suspicious death that takes place during a lavish party at her family home. Her search pulls her into the orbit of a secretive society, a tangle of motives, and a series of unsettling clues. As she digs deeper, she crosses paths with Superintendent Battle, whose involvement raises as many questions as it answers.
The ensemble behind the adaptation is stacked with familiar faces. Here’s a closer look at the actors stepping into Christie’s world.
Mia McKenna-Bruce
Plays: Bundle Brent
Mia steps into the role of Bundle, a sharp, impulsive amateur detective whose determination drives the entire investigation. Her character is quick-thinking, bold, and occasionally reckless — especially behind the wheel — but her instincts push her closer to the truth even when the odds are against her.
Helena Bonham Carter
Plays: Lady Caterham
As Bundle’s widowed mother, Helena brings a mix of dry wit and emotional depth to the role. Lady Caterham is still grieving the loss of her husband and son, and her once-secure life has been shaken by financial strain. Beneath her humor lies a woman trying to navigate a world that has left her with fewer options and mounting pressure.
Corey Mylchreest
Plays: Jimmy Thesiger
Corey takes on the role of Jimmy, a close friend who becomes one of Bundle’s key allies. Charming and quietly observant, he joins her in piecing together the events surrounding their friends’ deaths. His presence adds both warmth and tension as the mystery deepens.
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Martin Freeman
Plays: Superintendent Battle
Martin portrays the seasoned investigator assigned to the case. Battle is methodical, reserved, and difficult to read — a man who reveals little and notices everything. His involvement raises the central question of whether he’s helping Bundle uncover the truth or standing in her way.
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