Reminiscences of John Watson, M.D. In one of his darker moments, Holmes said of himself: My mind is like a racing engine, tearing itself to pieces because it is not connected up with the work for which it is built. In The Investigations, the engine of Holmes’s mind is racing full throttle, as he bears down on the puzzle of the Quiet Crescent, the case of the Apprentice’s Notebook and other mind-boggling mysteries. Enjoy a collection of seven classic stories from the newly discovered dispatch box of John Watson, MD.