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
The Body in the Library and Sir Henry all play significant roles in advancing the investigation, and, through them, the reader often has access to significant information before Miss Marple does. In addition, Adelaide Jefferson's son, Peter Carmody, plays at being a detective and inadvertently provides a unique source of information. Maurice Willson Disher of "The Times Literary Supplement" was impressed in his review of 16 May 1942 when he said, "Some devoted souls may sigh for Hercule Poirot, but there are bound to be others who will be glad to find his place taken in the 'new Agatha Christie' by Miss Marple. What this