When Guthrie is fatally stabbed in an alleyway, Murphy cancels his holiday to investigate. She was working undercover in the case of three murders of homeless women. Murphy in turn poses as a homeless man to find what the press is calling the return of Jack the Ripper. He takes up residence in a homeless shelter and befriends a teenaged refugee who may have witnessed one of the killings. He also has his eye on resident counsellor and religious advisor, Reverend William Norris.