Helena Bonham Carter, Martin Freeman, and Mia McKenna-Bruce USA. Helena Bonham Carter, Martin Freeman, and Mia McKenna-Bruce in CNetflix new series : Agatha Christie s Seven Dials 2026 Plot: In 1925, a country house party prank turns deadly. Lady Eileen Bundle Brent investigates the chilling murder plot. Lady Caterham and Superintendent Battle assist in solving the country house mystery that changes Bundle s life. LMK106-J11539-150126 Supplied by LMKMEDIA. Editorial Only. Landmark Media is not the copyright owner of these Film or TV stills but provides a service only for recognised Media outlets. PUBLICATIONxNOTxINxUKxUSAxCAN