21 February 1891
The murder of another woman in the Whitechapel district, London, makes the tenth, the number promised in Jack the Ripper's letter. The officers at Scotland Yard have not the slightest clue to the perpetrator, although the victim was still alive when found and the murderer could hardly have been a hundred feet away. The theory has been advanced that the Ripper is a woman instead of a man, and the idea is suggested by the fact that a woman could so much more easily conceal bloodmarks on her clothing by turning her skirt up around her waist. The police have always searched for a man, the clue being given by the letter signed Jack the Ripper.