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Mary Morstan has received a pearl in the post every year since her father's disappearance; when she is summoned to meet her mysterious benefactor, Holmes and Watson accompany her, leading to the truth about a secret pact.
Mary Morstan has received a pearl in the post every year since her father's disappearance; when she is summoned to meet her mysterious benefactor, Holmes and Watson accompany her, leading to the truth about a secret pact.
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S4 "The Sign of Four"Mary Morstan has received a pearl in the post every year since her father's disappearance; when she is summoned to meet her mysterious benefactor, Holmes and Watson accompany her, leading to the truth about a secret pact.
