Baron Collingwood's eldest son and title heir dies from a mysterious illness. Now that the second eldest son is also in bad condition, it seems that a curse has befallen the family. Neither doctors nor police are able to find the cause. Confronted with a riddle the Baron hires Holmes and Watson to solve the mystery before it is tool late.

© 2020 Bookstream Audiobooks (หนังสือเสียง ): 9783991155119

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