Murder on the Orient Express (1974)

The Famous Belgian detective Hercule Poirot boards the Orient Express, and one of the passengers requests his protection. The next day the passenger is found dead in his compartment, and Poirot is determined to atone for his failure by solving the case. The train becomes stuck in the snow, giving him about an hour to figure out the murderer's identity before losing track of the suspects. During his investigation, Poirot discovers that many of the passengers have some connection to a years-old unsolved case where an infant was kidnapped and murdered, leading to the suicide of her parents. This could be the vital clue to crack the case, but can he do it in time?