The game allows two teams of investigators compete who will be the first to solve the crime that happened in the quarter of Westminster by visiting 4 main locations, solving puzzles and gaining indications. These indications will direct to one of multiple suspects. Whoever finds the murderer first wins the game. There is also cooperative variant where one team tries to find the correct solution to the case. Cases are randomly generated by a combination of 4 main puzzles (each in its respective location) chosen out of 9 possibilities for each location. —user summary Il semblerait que Sherlock ait besoin de votre aide pour résoudre des crimes de plus en plus nombreux à Londres. Résolvez les énigmes, arpentez le Londres du XIXe siècle, et épatez le plus célèbre des enquêteurs... Des cartes " Énigme " pour explorer Hyde Park, Crystal Palace, Kensington Gardens ou encore le Albert Hall. Des cartes " Indice " pour progresser et résoudre le crime. Un poster pour identifier le coupable ! —description from the publisher