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A Streatham banker named Mr Alexander Holder makes a loan of £50,000 to a client from one of the "highest, noblest, most exalted names in England," implied to be a member of the British Royal Family and, thus, a son of Queen Victoria and an heir to the throne.
Episodes
1The Speckled Band 2The Illustrious Client 3The Devil's Foot 4The Copper Beeches 5The Red-Headed League 6The Abbey Grange 7The Six Napoleons 8The Man with the Twisted Lip 9The Beryl Coronet 10The Bruce-Partington Plans 11Charles Augustus Milverton 12The Retired Colourman 13The Disappearance of Lady Frances Carfax