"Jack the Ripper" is the best known pseudonym given to an unidentified serial killer active in the largely impoverished districts in and around the Whitechapel district of London's East End in 1888. Attacks ascribed to the Ripper typically involved women prostitutes from the slums whose throats were cut prior to abdominal mutilations. As the murders were never solved, the legends surrounding them became a combination of genuine historical research, folklore, and pseudohistory. Among more than one hundred Jack the Ripper suspects suggested since 1888, there have been several Poles and Polish Jews. These include Seweryn Antonowicz Kłosowski (pictured), also known as George Chapman, a serial killer executed in 1903; Aaron Kosminski, an insane Jew from Kłodawa; and John Pizer, another Polish Jew, also known as "Leather Apron". In 1987, Martin Fido, a ripperologist, speculated that the crimes may have been committed by Nathan Kaminsky, a Polish Jew who went by a generic Jewish name, David Cohen. The civil parish of Whitechapel around the time of the murders was experiencing an influx of immigrants from Ireland and Eastern Europe; its population was transient, impoverished and often used aliases. The Ripper's true identity will almost certainly never be known. (Full article...)