Agatha Christie a long-running character in Christie's works, appearing in 33 novels and 54 short stories. Miss Jane Marple, introduced in the short-story collection "The Thirteen Problems" in 1927, was based on Christie's grandmother and her "Ealing cronies". Both Jane and Gran "always expected the worst of everyone and everything, and were, with almost frightening accuracy, usually proved right." Marple appeared in 12 novels and 20 stories. During the Second World War, Christie wrote two novels, "Curtain" and "Sleeping Murder", intended as the last cases of these two great detectives, Hercule Poirot and Miss Marple. Both books were sealed in a bank
Miss Marple from Side to Side", it is mentioned that the nephew is now grown and successful and has a career. The effects of ageing are seen on Miss Marple, such as needing a holiday after illness in "A Caribbean Mystery". Little is known about Marple's background, except that she has two younger sisters. One of them is the mother of Raymond, and the other is mother to Mabel Denham, a young woman who was accused of poisoning her husband Geoffrey ("The Thumb Mark of St. Peter"). Miss Marple also appears in "Greenshaw's Folly", a short story traditionally included as part of