Arthur Conan Doyle 
The Adventure of the Bruce-Partington Plans [PDF ebook] 

The Adventure Of The Bruce-Partington Plans by Sir Arthur Conan Doyle. Thick smog-shrouded London is broken by a sudden visit from Holmes’ brother Mycroft. He has come about some lost, secret submarine plans. Seven of the ten pages were found with Arthur Cadogan West’s body, but three pages remain lost. Another classic adventure from Sherlock Holmes and a great addition to the collection.
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