October, 1888 — Whitechapel, London: Jack's shadow still hangs heavy over the back-streets of the East End. Scotland Yard has assigned Inspector Abberline to take over the investigation, aided by five new detectives with extraordinary abilities. The new recruits include the formidable Professor Moriarty, who uses his intelligence and cunning to impersonate the other detectives. Is he trying to put Jack off his stride, or to outwit his rival Sherlock Holmes? Or could he even be Jack himself, disguised as Moriarty? Who is the elusive Jack? The unrelenting manhunt continues!