You go down the right tunnel, and it's not long before you reach the end of it, where a ladder is built up the wall and into a higher level of the Sewers. But then you see something that makes you nearly jump out of your skin: A man's tuxedoed corpse is slumped against the bottom of the ladder, his head... blown up? His head is gone, leaving a ragged stump of flesh for his neck. The grey matter and blood of his brains are scattered all over the floor and up the walls. In his limp, dead hand, is a carbon-fibre brief case, locked shut. What the hell happened here?