• Key cast members include Mia McKenna-Bruce, Helena Bonham Carter and Martin Freeman.
• The series adapts Agatha Christie’s The Seven Dials Mystery with Chris Chibnall as writer.
• Bundle Brent (McKenna-Bruce) leads a class-spanning investigation after a party turns deadly.
• Stream Agatha Christie’s Seven Dials now on Netflix.

Who’s in the Seven Dials Netflix cast?

Agatha Christie’s Seven Dials centers on Lady Eileen “Bundle” Brent, played by Mia McKenna-Bruce, who is drawn into a spiraling conspiracy after a practical joke at a high-society party leads to murder. Written by Chris Chibnall, the Netflix adaptation leans into Bundle’s wit and determination as she races to unmask the killer.

Mia McKenna-Bruce as Bundle

McKenna-Bruce leads the ensemble as the plucky hostess of Chimneys. The actress describes Bundle as “this piece of magic that bounces about,” a socialite who refuses to be sidelined. McKenna-Bruce’s recent credits include a BAFTA Rising Star–recognized performance — watch here: Embedded post — YouTube: Mia McKenna-Bruce BAFTA Rising Star (https://www.youtube.com/watch?v=Ai60V5BEhOk).

Helena Bonham Carter and Martin Freeman

Helena Bonham Carter plays Lady Caterham, Bundle’s fragile but devoted mother who must take on unexpected responsibilities. Bonham Carter calls the role psychologically nuanced and subtly powerful.

Martin Freeman appears as Superintendent Battle, the official investigator on the case. Freeman says period costuming helped shape his portrayal of a formal, understated detective with a military past.

Supporting sleuths and suspects

The series packs a roster of allies and suspects around Bundle: Edward Bluemel plays the charming cad Jimmy Thesiger; Nabhaan Rizwan is Ronnie Devereux, a Foreign Office employee who’s awkward on the dance floor; Corey Mylchreest portrays Gerry Wade; and Ella-Rae Smith is Loraine Wade, who becomes embroiled in the investigation.

Iain Glen appears as the deceased Lord Caterham, whose suspicious death looms over the plot. Other supporting cast members include Mark Lewis Jones, Dorothy Atkinson, Guy Siner, Josef Davies, Nyasha Hatendi and Tim Preston.

Why the cast matters

Writer Chris Chibnall said the appeal of Seven Dials was Bundle herself — and the team assembled to bring her to life. The adaptation aims to blend Christie’s period mystery with modern production values and a strong lead performance.

Where to watch

Agatha Christie’s Seven Dials is streaming now on Netflix. The show pairs classic whodunit plotting with a luminous central performance, and the ensemble cast packs the suspects and sleuths the story needs.

Quick cast snapshot

• Mia McKenna-Bruce — Lady Eileen “Bundle” Brent
• Helena Bonham Carter — Lady Caterham
• Martin Freeman — Superintendent Battle
• Edward Bluemel — Jimmy Thesiger
• Nabhaan Rizwan — Ronnie Devereux
• Corey Mylchreest — Gerry Wade
• Ella-Rae Smith — Loraine Wade
• Iain Glen — Lord Caterham

Stream the series on Netflix to see how Bundle peels back layers of secrecy and society to solve the mystery.

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