Mary Jane Kelly
Also known as Marie Jeanette Kelly, Fair Emma, Ginger, Dark Mary and Black Mary, is widely believed to have been the final victim of the notorious unidentified serial killer Jack the Ripper, who murdered at least five women in London from Aug to Nov 1888. At the time of Kelly's death, she was approximately 25 years old, working as a prostitute and living in relative poverty.
Unlike the other four canonical Ripper victims—each of whom had been murdered outdoors and whose mutilations could have been committed within minutes—Kelly was murdered within the sparsely furnished single room she rented at 13 Miller's Court, affording her murderer an extensive period of time to mutilate her body.
Kelly's body was by far the most extensively mutilated of the canonical victims, with her mutilations taking her murderer approximately two hours to perform.