 Taken at face value it appears that Poirot was over 125 years old when he died.Though the majority of the Hercule Poirot novels are set between World War I and World War II, the later novels then set him in the 1960s (which is contemporary with the time Agatha Christie was writing even though it created minor discrepancies).Many people believe, from her later works, that Poirot retired from police work at around 50, but this is untrue, because as shown in the short story "The Chocolate Box", he retired at around 30.