Multiple choice general knowledge Which one is the First appearance for Hercule Poirot Poirot Investigates Cards on the Table Mysterious affairs at styles Murder of Roger Ackroyd Reveal answer Fill a bubble to check yourself C Correct answer Explanation Hercule Poirot first appeared in Agatha Christie's debut novel 'The Mysterious Affair at Styles' (1920), not 'Poirot Investigates' (short story collection), 'Cards on the Table', or 'Murder of Roger Ackroyd'.