Characters in Poirot Investigates

Supporting characters

• Hercule Poirot

  Fastidious Belgian ex-policeman who relies on order, method, and psychology rather than legwork.

  Also in The Mysterious Affair at Styles, Murder on the Links, The Murder of Roger Ackroyd, The Big Four, Mystery of the Blue Train, Black Coffee, Peril at End House, Lord Edgware Dies, Murder on the Orient Express, Murder in Three Acts

• Captain Arthur Hastings

  Earnest, conventional ex-army officer who narrates each case and is repeatedly outpaced by Poirot's reasoning.

  Also in The Mysterious Affair at Styles, Murder on the Links, The Big Four, Black Coffee, Peril at End House, Lord Edgware Dies, Dumb Witness, Curtain

• Inspector Japp

  Official policeman who alternates between rivalry with Poirot and reliance on his help.

  Also in The Mysterious Affair at Styles, The Big Four, Black Coffee, Lord Edgware Dies, Death in the Clouds, The Under Dog and Other Stories, Poirot's Early Cases, The Affair at the Victory Ball