A collection of gripping cases that culminates in the most shocking of all - the notorious, fatal encounter between Sherlock Holmes and Professor Moriarty at the Reichenbach Falls.

'He is the Napoleon of Crime... He is the organiser of half that is evil and of nearly all that is undetected in this great city'.

A man like Sherlock Holmes has many enemies. Violent murderers, deviant villains, ghosts of old loves, blackmailers and poisonous scribes, to name but a few. But none are so deadly, so powerful, as Professor Moriarty. Moriarty - the only man who can compete with Holmes' genius. The only man who can, perhaps, ultimately defeat the great detective.