The fictional detective created by Agatha Christie who is a Belgian retired police officer is Hercule Poirot.
Poirot first appeared in Christie’s 1920 novel The Mysterious Affair at Styles. He is introduced as a Belgian refugee who has settled in England after the First World War, having previously served in the Belgian police. He later works as a private investigator, using logic, psychology, and his famous “little grey cells” to solve crimes.
Poirot’s meticulous personality is as distinctive as his detective method. His waxed moustache, immaculate clothing, strict routines, and occasional vanity often provide comic contrast to his sharp observations. Captain Arthur Hastings frequently serves as his companion and narrator, while Inspector Japp represents the official police connection.
Poirot appears in 33 novels, two plays, and 51 short stories published between 1920 and 1975. His final Christie appearance is Curtain: Poirot’s Last Case. Inspector Japp is a Scotland Yard officer, Tommy Beresford is part of a separate detective partnership, and Miss Marple is Christie’s elderly amateur sleuth from St Mary Mead.