Murder on the Orient Express by Agatha Christie is a classic mystery novel featuring the renowned detective Hercule Poirot. Set aboard the luxurious Orient Express train, the story unfolds when a wealthy American passenger is found murdered. Poirot, using his sharp observational skills, investigates the crime, discovering that each passenger has a connection to a notorious kidnapping case. The investigation leads to a surprising twist challenging conventional notions of justice. The novel’s success has led to numerous adaptations, including acclaimed films, and it remains a seminal work in the mystery genre, known for its intricate plot and memorable characters.