"I know every move of your game. It has been a duel between you and me, Mr Holmes. If you are clever enough to bring destruction upon me, rest assured that I shall do as much to you."With Sherlock Holmes's reputation as the scourge of the criminal underworld preceding him, the ingenious detective, with the aid of Dr Watson, is confronted in these stories by some of his most fiendishly difficult cases yet. The collection culminates in 'The Final Problem', in which the evil Professor Moriarty is plotting the detective's downfall. Soon Holmes and Watson are led across Europe in a deadly pursuit of their devilish quarry, until the final showdown in Switzerland, at the precipitous Reichenbach Falls.