Description Poirot Investigates is a classic collection of Agatha Christie’s short stories first published in 1924. It follows the famous Belgian detective Hercule Poirot and his companion Arthur Hastings as they solve a series of mysteries. From threatening letters to Egyptian curses to missing wills, Poirot’s little grey cells never falter. While Hastings and the reader are lost in the minutiae of the case, Poirot sees it all—and with impeccable attention to detail, finds the culprit.