4.50 from Paddington

Elspeth McGillicuddy believes she has witnessed a murder while travelling on a train. She sees a man strangling a woman through the window as two trains pass each other. However, when she reports the incident, there is no evidence, no body, and no suspects. Frustrated by the lack of action from the authorities, Elspeth turns to her friend Jane Marple for help. Together, they navigate the mystery and uncover hidden truths, proving that appearances can be deceiving and that Miss Marple's intuition is invaluable in solving the case.