Though Sir Arthur Conan Doyle went on to write more tales of his famed detective, His Last Bow is chronologically the final adventure of Sherlock Holmes. His Last Bow is a fitting swansong with Sherlock's senses being forced to operate at their highest capacity. The story is part mystery and part espionage as Sherlock faces off with a German spy on the eve of WWI in a appropriately enthralling final adventure.