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Quinlan's investigation leads him to discover that all of The Ripper's victims and all of those associated with the investigation of The Ripper (except Quinlan himself) were involved with an old gaming group known as the Web Runners, who played a game based on the Jack the Ripper mystery. The last session of this game somehow caused one of the players to die in real life. The player that died happened to be Catherine Powell's mother. Assistance from a pathologist named Vic Farley reveals that The Ripper's murders were done by placing a code into a victim's brain while in cyberspace that caused their internal body pressure to rise to a point of explosion, which Farley experiences immediately after providing his explanation. Quinlan also finds a cyberspace weapon developed by a murdered cyberarchitect named Hamilton Wofford, designed specifically to kill The Ripper inside a virtual recreation of the historic Whitechapel district of London, where the Jack the Ripper murders took place. After assembling the weapon and gathering the necessary protection from The Ripper's weapon, Quinlan enters cyberspace, kills The Ripper, and manages to escape the virtual Whitechapel in time to escape its destruction.

The Ripper can be one of four possible suspects: Joey Falconetti, Claire Burton, Vincent Magnotta, or Catherine Powell. With each play-through, certain clues and actual identity of The Ripper vary, though the bulk of the story is unchanged, and clues indicating the guilt of all four suspects will appear regardless of who the killer is. For instance, Catherine Powell experiences mysterious surges in brain wave activity that coincide with all the Ripper's murders regardless of whether or not she actually is the Ripper, and no alternative explanation for these surges is provided. However, the changes in the game's story and puzzles are limited to the game's third act- after Farley's death.