The Secret Of Sherlock Holmes

From their initial meeting in Baker Street, through years of mystery and adventure and culminating in the ordeal and tragedy of Reichenbach Falls and its aftermath, Holmes and Watson form a unique pairing... Yet a dark thread runs through their years of friendship... It is as if a shadow haunts Holmes, a dark twin that pursues and threatens to consume him... What is the true explanation for the enigmatic Moriarty in the legend of Sherlock Holmes?