Israel Keyes confesses to committing several murders before killing himself in jail.

Killer Profile

Israel Keyes

Sean Vincent Gillis torments women in Louisiana in the late 1990s.

Ronald Dominique rapes and kills over two dozen men throughout a 10-year period.

Timothy Krajcir is convicted of killing nine women between 1977 and 1982.

Wesley Shermantine and Loren Herzog prey on humans for sport.

After abducting young women from the streets of Philadelphia, Gary Heidnik tortures and rapes them in his basement.