Dr. John Curran has spent years pouring over the most precious elements of Agatha's legacy – her personal archive, a treasure trove containing her letters, manuscripts and 73 meticulously kept notebooks, in which she documented everything she saw and heard. We’ll garner unprecedented insight into how the author wove together formidable plots and how, despite being known as the Queen of Cozy Crime, Agatha's mind was, the words of screenwriter Sarah Phelps, "incredibly dark."

Contrary to being a Marple-esque figure, she was "infinitely more complex," The clues as to why lie in her own life-story. We'll hear how an isolated childhood sparked Agatha's imagination, how her time as a dispenser during WWI gave her a knowledge of medicine – and poison, blood and gore; how the breakdown of her first marriage allowed her, according to Biographer Laura Thompson, her very own plot twist – a disappearance which flummoxed the nation; how traveling the world healed her broken heart and transformed her writing from a hobby into a serious profession; and how during WWII Agatha's own sense of mortality made her output more urgent, writing an awesome three to four books every year.