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After abducting young women from the streets of Philadelphia, Gary Heidnik tortures and rapes them in his basement.
Israel Keyes confesses to committing several murders before killing himself in jail.
Ronald Dominique rapes and kills over two dozen men throughout a 10-year period.
Wesley Shermantine and Loren Herzog prey on humans for sport.
Sean Vincent Gillis torments women in Louisiana in the late 1990s.
Timothy Krajcir is convicted of killing nine women between 1977 and 1982.