The Orient Express was a train journey across Europe in a luxury train. Agatha made this trip several times to accompany bet second husband Sir Max Mallowan on his archaeological expeditions.
The murder mystery that she set on this train is a truly unique story. The murder victim is the kidnapper and murderer of a small child who manages to go inpunished. How he gets his just desserts and how Poirot unravels the ingeniously laid red herrings make this book one of her most popular ones. Several film and TV adaptations have been made, each more entertaining than the other.