The film is divided into two episodes: "The Acquaintance" (based on the 1892 short story "The Adventure of the Speckled Band") and "Bloody Inscription" (based on the 1887 novel A Study in Scarlet).
Production companies：
Lenfilm
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Gosteleradio USSR
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Overview：The film is divided into two episodes: "The Acquaintance" (based on the 1892 short story "The Adventure of the Speckled Band") and "Bloody Inscription" (based on the 1887 novel A Study in Scarlet).
