• Mia McKenna-Bruce stars as Lady Eileen “Bundle” Brent, the unlikely sleuth at the heart of the mystery.
  • Helena Bonham Carter and Martin Freeman join a starry ensemble in the Chris Chibnall adaptation.
  • The series modernizes Agatha Christie’s 1929 novel while keeping its classic whodunit structure.

Cast overview: sleuths, suspects and star power

Agatha Christie’s Seven Dials (Netflix) lines up a murder-mystery cast that mixes rising talent and seasoned stars. Writer-producer Chris Chibnall brings Christie’s 1929 novel The Seven Dials Mystery to the screen with a focus on Bundle Brent, played by Mia McKenna-Bruce.

Mia McKenna-Bruce as Lady Eileen “Bundle” Brent

Mia McKenna-Bruce leads the series as the spirited hostess of Chimneys who becomes determined to solve a growing conspiracy after a friend’s death. The role highlights Bundle’s intelligence and charm as she crosses class lines and confronts danger.

Helena Bonham Carter as Lady Caterham

Helena Bonham Carter plays Bundle’s mother, Lady Caterham — a more reserved, fragile presence forced into responsibility. Bonham Carter brings emotional depth to a character who balances vulnerability and quiet strength.

Martin Freeman as Superintendent Battle

Martin Freeman is the steady, formal Superintendent Battle, a traditional Christie investigator whose military background and precise manner contrast with Bundle’s impulsive sleuthing.

Supporting cast highlights

The series fills out its world with key supporting roles: Edward Bluemel as the charming cad Jimmy Thesiger; Nabhaan Rizwan as Ronnie Devereux, an awkward but loyal friend; Corey Mylchreest as Gerry Wade; Ella-Rae Smith as Loraine Wade; and Iain Glen as the late Lord Caterham.

Each performer helps create the social tapestry of Chimneys: parties, secrets, and a rotating list of suspects. Costume and production design also play a big part, with actors noting how period tailoring informed their performances.

Why this adaptation matters

Chibnall chose Seven Dials to spotlight Bundle, an energetic female protagonist who hasn’t been widely adapted in recent screen versions. The show preserves Christie’s puzzle-driven plotting while updating pacing and visuals for modern viewers.

Where to watch and who’s who

Agatha Christie’s Seven Dials is available to stream on Netflix. Alongside the lead cast, the full ensemble includes Mark Lewis Jones, Dorothy Atkinson, Guy Siner, Josef Davies, Nyasha Hatendi and Tim Preston among others.

For viewers who like classic whodunits with contemporary production values, Seven Dials pairs a crowd of memorable characters with a central heroine who drives the mystery forward.

Image Referance: https://www.netflix.com/tudum/articles/agatha-christie-seven-dials-cast-guide