Shunned by the gay and straight communities, Ronald Dominique opted to create his own existence—one in which he raped and killed more than two dozen men over the course of a decade-long spree.

One of four serial killers tormenting Louisiana in the late 1990s through the early 2000s, Sean Vincent Gillis saw women as a collection of parts—and set about turning them into just that.

Law enforcement tries to piece together the hints serial killer Israel Keyes left before his 2012 suicide, working to identify victims he claims to have killed over the previous fifteen years.