Mrs McGinty's Dead is a work of detective fiction by British writer Agatha Christie, first published in the US by Dodd, Mead and Company in February 1952 and in the UK by the Collins Crime Club on 3 March the same year. The US edition retailed at $2.50 and the UK edition at nine shillings and sixpence (9/6). The Detective Book Club issued an edition, also in 1952, as Blood Will Tell.

Miss Jane Marple is a fictional character in Agatha Christie's crime novels and short stories. Miss Marple lives in the village of St. Mary Mead and acts as an amateur consulting detective. Often characterized as an elderly spinster, she is one of Christie's best-known characters and has been portrayed numerous times on screen. Her first appearance was in a short story published in The Royal Magazine in December 1927, "The Tuesday Night Club", which later became the first chapter of The Thirteen Problems (1932). Her first appearance in a full-length novel was in The Murder at the Vicarage in 1930, and her last appearance was in Sleeping Murder in 1976.