Lucy Worsley investigates Agatha Christie's shocking disappearance in 1926, her subsequent discovery and memory loss, and reveals the profound influence this experience had on her writing.Lucy delves into this traumatic, watershed moment in Agatha's life, visiting key locations from the chalk pit where Agatha crashed her car to Abney Hall, the grand house where she took refuge and which would go on to inspire several of her books. Lucy reveals connections between Agatha's real-life experiences and her novels and uncovers new evidence about Agatha's mental health and the cutting-edge psychiatric treatment she received.