A prostitute is found brutally murdered. Immediately fear starts to spread. The victim bears the same hallmarks as Jack the Ripper's recent killing spree in England. Could it be that the Ripper has crossed the Atlantic to fresh killing grounds? Or is this simply a copycat murder? To solve the case, one of the original English Ripper pathologists, Finley Jameson, is teamed up with Joseph Argenti, one of the new 'untouchable' detectives, hand-picked by a New York Mayor eager to fight corruption.