In this week's episode of The Learning Curve, guest co-hosts Mariam Memarsadeghi and Mary Connaughton interview Laura Thompson, author of "Agatha Christie: A Mysterious Life." Ms. Thompson discusses into Agatha Christie's life, her iconic characters, and her impact on the mystery genre, including adaptations of her works in film and theater, as well as her mysterious 1926 disappearance. The interview concludes with a reading from Thompson's biography of Agatha Christie.