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시즌 4, 에피소드 5: A young man is found murdered on a railway line leading from the underground. Plans of a secret submarine are found in his pocket. Is he a hero or traitor? Aided and abetted by brother Mycroft, Holmes and Watson search for the killer of Cadogen West and look to secure the missing papers.
Mystery · 1986년 7월 9일 · 50분