<a href="https://en.wikipedia.org/wiki/Jack_the_Ripper" id="mwYQ" rel="mw:WikiLink" title="Jack the Ripper">Jack the Ripper</a>: The first of 11 <a href="https://en.wikipedia.org/wiki/Whitechapel_murders" id="mwYg" rel="mw:WikiLink" title="Whitechapel murders">unsolved brutal murders</a> of women committed in or near the impoverished <a href="https://en.wikipedia.org/wiki/Whitechapel" id="mwYw" rel="mw:WikiLink" title="Whitechapel">Whitechapel</a> district in the <a href="https://en.wikipedia.org/wiki/East_End_of_London" id="mwZA" rel="mw:WikiLink" title="East End of London">East End of London</a>, occurs.<sup about="#mwt71" class="mw-ref reference" data-mw='{"name":"ref","attrs":{},"body":{"id":"mw-reference-text-cite_note-11"}}' id="cite_ref-11" rel="dc:references" typeof="mw:Extension/ref"><a href="./April_3#cite_note-11" id="mwZQ" style="counter-reset: mw-Ref 11;"><span class="mw-reflink-text" id="mwZg">[11]</span></a></sup>
<span class="mw-reference-text" id="mw-reference-text-cite_note-11"><cite about="#mwt68" class="citation book cs1" id="CITEREFKeppelBirnes2009">Keppel, Robert D.; Birnes, William J. (2009). <a class="external text" href="https://books.google.com/books?id=MC_5RNi2Yc0C" id="mwB1E" rel="mw:ExtLink nofollow"><i id="mwB1I">Serial Violence: Analysis of Modus Operandi and Signature Characteristics of Killers</i></a>. Boca Raton, Fla.: CRC Press. pp.<span id="mwB1M" typeof="mw:Entity"> </span>41–42. <a class="mw-redirect" href="./ISBN_(identifier)" id="mwB1Q" rel="mw:WikiLink" title="ISBN (identifier)">ISBN</a><span id="mwB1U" typeof="mw:Entity"> </span><a href="./Special:BookSources/9781420066326" id="mwB1Y" rel="mw:WikiLink" title="Special:BookSources/9781420066326"><bdi id="mwB1c">9781420066326</bdi></a>.</cite><span about="#mwt68" class="Z3988" id="mwB1g" title="ctx_ver=Z39.88-2004&amp;rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&amp;rft.genre=book&amp;rft.btitle=Serial+Violence%3A+Analysis+of+Modus+Operandi+and+Signature+Characteristics+of+Killers&amp;rft.place=Boca+Raton%2C+Fla.&amp;rft.pages=41-42&amp;rft.pub=CRC+Press&amp;rft.date=2009&amp;rft.isbn=9781420066326&amp;rft.aulast=Keppel&amp;rft.aufirst=Robert+D.&amp;rft.au=Birnes%2C+William+J.&amp;rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DMC_5RNi2Yc0C&amp;rfr_id=info%3Asid%2Fen.wikipedia.org%3AApril+3"></span></span>