"Holmes!" I cried. "Is it really you? Can it indeed be that you are alive? Is it possible that you succeeded in climbing out of that awful abyss?"

London's criminal underworld has risen once again, and a dangerous individual with an air gun is prowling the streets. The capital is in greater need of its protector, Sherlock Holmes, than ever

Three years have passed since Holmes and the evil mastermind Professor Moriarty fell, locked in combat, into the Reichenbach Falls in Switzerland, and when Doctor Watson collides with an odd-looking old book collector in the street, little does he know that the world's greatest detective is about to return...