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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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The Casebook of Sherlock Holmes

S1, EP3 "The Naval Treaty"

Holmes is called in when a top secret document is stolen from the British Foreign Office.

The Casebook of Sherlock Holmes

S1, EP4 "The Solitary Cyclist"

Holmes and Watson uncover a plot to marry a beautiful music teacher for her inheritance.

The Casebook of Sherlock Holmes

S1, EP5 "The Crooked Man"

Holmes unravels a murder involving a locked room with no key, a domestic disagreement and a set of animal tracks.

The Casebook of Sherlock Holmes

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.

Lord St. Simon will not set foot in Glaven Castle, and his aunts fear that his marriage to a beautiful American heiress may fail; Sherlock Holmes works to solve the mystery.
Starring: Alison Skilbeck, Christopher Benjamin, Colin Jeavons, Damien Thomas, David Burke, Edward Hardwicke, Eric Porter, Gayle Hunnicutt, Jeremy Brett, Lisa Daniely, Marina Sirtis, Nicholas Clay, Patricia Hodge, Rosalie Williams, Rosalind Knight
Original Air Date: Feb 21, 1991
Genres: DramaTV Series
Rating: TVG
Playback: HD
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