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"Murder on the Orient Express," directed by Sidney Lumet and released in 1974, is a classic whodunnit set aboard the luxurious Orient Express train. Based on the 1934 Agatha Christie novel, the film features an all-star cast, including Albert Finney as the renowned detective Hercule Poirot, who becomes embroiled in a complex murder investigation when a wealthy American businessman is found stabbed to death in his compartment.