You are in the room with prolific British “Queen of Crime” author, Agatha Christie, creator of such famous detectives as Hercule Poirot, the eccentric Belgian, and English spinster Miss Jane Marple. Ms. Christie will enjoy a career spanning more than 50 years, and her work will sell into the billions. But today the year is 1949, and you have come to keep her company at her home in Devon. Agatha Christie is going away, and she has some things to tell you. Betsey Means, who recently brought us children’s advocate Mother Jones, animates the Queen of Crime.