‘How to Have Sex’ Star Mia McKenna-Bruce to Lead Netflix Agatha Christie Series ‘The Seven Dials Mystery’ With Helena Bonham Carter and Martin Freeman (EXCLUSIVE)

“How to Have Sex” breakout and newly-crowned BAFTA Rising Star winner Mia McKenna-Bruce has landed her next major role.

The British actress is set to lead the cast of “The Seven Dials Mystery,” Netflix‘s upcoming Agatha Christie series written by “Broadchurch” creator and former “Doctor Who” showrunner Chris Chibnall, Variety has learned. Joining McKenna-Bruce are Helena Bonham Carter and Martin Freeman.

Set in 1925 and described as a “witty, epic and fast-paced drama,” “The Seven Dials Mystery” follows a lavish country house party where a practical joke appears to have gone horribly, murderously wrong. In the end, it’s up to the unlikeliest of sleuths — the fizzingly inquisitive Lady Eileen “Bundle” Brent (McKenna-Bruce) — to unravel a chilling plot that will change her life, cracking wide open the country house mystery. Bonham Carter and Freeman will play the characters Lady Caterham and Superintendent Battle, respectively.

Penned by Chibnall, the series is executive produced by “The Crown” exec producer Suzanne Mackie under her Orchid Pictures banner and Chris Sussman (“Good Omens”). Chris Sweeney (“The Tourist,” “Back to Life”) will direct.

Chibnall will executive produce the show through his company Imaginary Friends, and James Prichard of Agatha Christie Limited is also an executive producer on the series. Andy Stebbing is on board as an executive producer and Joanna Crow will be series producer. 

Set to go into production this summer, “The Seven Dials Mystery” marks the first announced series from Orchid, which Mackie set up in 2020 under a deal with Netflix after a 12-year stint at “The Crown” producer Left Bank Pictures.

“Chris Chibnall’s scripts are brilliant, and I am thrilled to be part of this new interpretation of the iconic Agatha Christie’s storytelling,” McKenna-Bruce said in a statement.

She received critical acclaim for her lead role in Molly Manning Walker’s debut feature “How to Have Sex,” which won the main Un Certain Regard prize in Cannes in 2023 and was later released by Mubi.