Holmes and Watson encounter, on their bewildering investigation: a large, ferocious rat-like creature;  a gentleman thief who politely leaves a calling card, and the armed and lethally dangerous Oriental gang of the Black Tongs.

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Could there be a connection between these disparate factions? And what is really going at the mysterious Sumartra warehouses?

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A Holmes and Watson Series feature-length Mystery

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The Lady Dorchester 4 of 4