Poirot Investigates is a short story collection written by Agatha Christie and first published in the UK by The Bodley Head in March 1924. In the eleven stories, famed eccentric detective Hercule Poirot solves a variety of mysteries involving greed, jealousy, and revenge. The American version of this book, published by Dodd, Mead and Company in 1925, featured a further three stories. The UK first edition featured an illustration of Poirot on the dust jacket by W. Smithson Broadhead, reprinted from the 21 March 1923 issue ofThe Sketch magazine.