The Case of the Missing Will is a short story by Agatha Christie which was first published in The Sketch in 1923 in the U.K. It the U.S., the story was first published in The Blue Book Magazine in 1925. The story was gathered and included in the collection Poirot Investigates, published by Bodley Head in 1924 in the U,K, and Dodd, Mead and Company in the U.S. in 1925. It is one of the early Poirot stories.