Sherlock: Le Siècle Mécanique [Sherlock: The Mechanical Age]

After discovering a new inexhaustible source of energy based on ether, Mycroft, the brother of Sherlock Holmes has disappeared. His discovery is no longer safe. The energy tycoons are ready to do anything to make the object that threatens their power disappear. Sherlock needs you! While he investigates the fate of his brother, he asks you to go to Mycroft's offices to find and recover this source of energy and announce his recipe to the world. All this, leaving no trace of your passage. How will you proceed?