Mycroft regarded his younger brother's liking to paw at grass blades for clues as low-class, and vaguely amusing.

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Sherlock Holmes had an older brother, Mycroft, reputed to be smarter.

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There is a supporting role for Mycroft, a possible appearance by Moriarty (Watson isn't sure) and a plot of such dazzling complexity that diagrammatic summary wouldn't do it justice.

WSJ: Book Review: The House of Silk

Trouble was, Mycroft was lazy as sin.

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