Despite being the most famous fiction writer in the world, Agatha Christie shunned publicity and liked to keep her private life very much her own - particularly her secret garden at Greenway, buried deep in the heart of her native Devon. The gardens at Greenway were one of the great loves of her life and offered her a peaceful retreat from the outside world. This fascinating documentary offers a rare insight into the garden, how it evolved during the time she spent there and the major part it played in her life.