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

Fancy a good mystery? Dive into this Sherlock Holmes tale from the pen of the master, Sir Arthur Conan Doyle. Drawn from Doyle’s last collection of Sherlock Holmes stories, "The Adventure of the Bruce-Partington Plans" centers on a set of secret blueprints for a state-of-the-art underwater vessel — and the identity of the man who was carrying them when he fell to his death from a moving train. A must-read for fans of classic detective fiction