Whitehall Mystery is a game of deduction and investigation that allows you to walk the alleys of late 19th century London in the evocative setting linked to Jack the Ripper. An emulator of him seems to have appeared in Whitehall, scattering the pieces of his poor victims around the streets. One of the players will take on the role of a serial killer ready to commit a series of heinous crimes, while the rest of the players, in the role of a group of investigators, will have to unmask and catch him before it's too late in a frantic hunt for man. The terrible crimes take place in Whitehall, which is represented on the game board divided into four quadrants and organized according to an intertwining of streets, intersections, and a series of numbered boxes that can have a white background for the streets, a black background to indicate crowded alleys or those patrolled by the police, or a blue background for the docks. Only the white boxes can be used by the assassin as a place of discovery; however, some special abilities from both sides will allow players to move between places on the same block (all areas limited by a polygon of roads) without necessarily following the connections of the streets.