By Hanna Rantala ‘Agatha Christie’s Seven Dials’ brings feisty flavour to murder mystery LONDON, – Makers of the new Netflix series “Agatha Christie’s Seven Dials” hope to introduce a new generation to the queen of crime, the iconic author of more than 60 mystery novels. The three-part show debuting Thursday is based on Christie’s 1929 novel “The Seven Dials Mystery” and stars “How to Have Sex” actor Mia McKenna-Bruce as a bright young aristocrat, Lady Eileen “Bundle” Brent. When a guest dies in suspicious circumstances during a glitzy gathering at her country mansion, Bundle takes it upon herself to find out what happened. Her wits, determination and seven clocks left on the scene lead Bundle to a shadowy scheme. “The fact that Bundle’s kind of leading the charge, this young, fearless, feisty girl, something that we haven’t seen very much of, I think that really gives it a new, exciting feel,” said McKenna-Bruce at a London premiere on Tuesday, the day after the 50th anniversary of Christie’s death. The whodunit also stars Helena Bonham Carter …