What would Sherlock Holmes be without his companions Dr. Watson, Inspector Lestrade, his brother Mycroft and Irene Adler? Nothing – considering there's a devious villain roaming the streets of London. Players slip into popular roles from the Arthur Conan Doyle novels and experience an exciting chase on the streets of London. The pursued Moriarty is rarely spotted – so in order to stop Moriarty, the detectives must use teamwork and their special abilities. Caution: Moriarty likes to trick everyone: suddenly and secretly he uses a hot-air balloon to covers his tracks. Moriarty wins if he manages to remain undetected until the end of the game. The detectives win if they are on the same station as Moriarty.