The Dark Plague

Dracula has risen, and with the countess out of the way, he precedes to exact revenge on the world. He has taken control of the headless Horseman. He sends him to destroy all of the Gypsies in the area, and all the while, he fights to get his hands on the precious book containing all of the secrets of the monsters, which is titled M. However, he is not the only problem anymore. The Mummy has been sitting silently in the corner of Bathory's chambers, waiting for the day the obscure words are spoken, that day has come, and now the mummy has been brought from the unknown. Being the ruler of the dead, he begins his reign by taking control of every dead creature in the land, including Dracula's army of vampires. Now the ground is overrun by zombies, and there seems to be nothing that can stop them.

Jekyll has lost everything, and now he is alone and seeking only to die like his only friends, but Hyde has other plans for him. Once Hyde takes control, he wanders into a town overrun by zombified werewolves and vampires; however, with all the chaos, he finds hope in some new friends. Percy Blakeney was once an aristocrat in France by day, but at night he donned a mask and aided in rescuing men and women condemned to death; he was known as the Scarlett Pimpernel.
Along with Percy Blakeney, he befriends another man. This professor has a cunning way of escaping any situation and has a knack for building contraptions; his name is Professor Challenger. Also seeking an end to the madness is Sherlock Holmes with the aid of Dr. John Watson, Diego De La Vega, Arsene Lupin, Allan Quatermain, and their new Ally, Dorian Gray.
Professor Moriarty is fighting to keep his book out of the hands of evil, so he sends the text of M with Sarah and the Frankenstein monster, who has now become a werewolf himself. Soconiue the journey as the book of M continues in "The Dark Plague."