His Last Bow

How did the blueprints of a super-secret submarine end up in the pocket of a young man found dead in a railway tunnel? Who is the sender of that terrible package containing a pair of human ears in a cardboard box? What could the sins of youth and research in the wild regions of West Africa lead to? Sherlock Holmes and Doctor Watson will have to solve a whole series of new mysteries before the great detective from Baker Street finally retires—swapping bustling London for a quiet farm in Sussex. However, in those days when the whole world is teetering on the brink of World War I, only one person is capable of preventing Britain’s military secrets from falling into the enemy’s hands.