Oxford Dominoes One : Sherlock Holmes: The Top-Secret Plans

كتاب Oxford Dominoes One : Sherlock Holmes: The Top-Secret Plans
المؤلف: Sir Arthur Conan Doyle

This telegram is from my brother Mycroft , ' said Holmes . He wants to speak to me at once about Mr Arthur Cadogan . Do you know this man , Watson ? ' ' I saw something about him in today's newspaper , I answered . When a young man dies on a London Underground line , top - secret plans for a new British submarine go missing . But who is Cadogan's killer , why did he die , and where are the missing papers ? Sherlock Holmes and Doctor Watson must quickly help Mycroft to answer these important questions .