BritBox’s New Doomed Royal Romance Gets Devastating First Look [Exclusive]

True crime dramas have certainly carved out a place on television over the last several years. While we’ll always love a good investigative documentary, sometimes a real-life tale can hit home even more when your favorite actor or actress steps into the leading role — just look at the success of HBO’s The Staircase or Netflix and Ryan Murphy’s Monster franchise. Soon, BritBox will unveil its latest foray into the genre when The Lady hits the platform on March 18. Combining the world’s obsession with the royal family with a shocking story of love, lies, and murder, and mixing both with a stunning leading ensemble that includes Mia McKenna-Bruce…