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Steed is the latest in a long line of aristocrats who have been accused of crimes thanks to carefully planted evidence. He also finds himself victimized by a blackmailer, who uses his ill-gotten gains to purchase works of art. Making matters worse, Steed cannot entirely rely on Tara for assistance, inasmuch as she has been immobilized by a broken ankle. Written by Philip Levene, "Curious Case of the Countless Clues" first aired in England on February 5, 1969, some ten months after its American debut on April 3, 1968.