Jeffrey Lionel Dahmer murdered 17 men and boys between 1978 and 1991. The gruesome murders involved rape, necrophilia and cannibalism. Pleading insanity, the court found Dahmer sane and guilty on 15 counts of murder and he was sentenced to 15 life terms, the equivalent of 957 years in prison. (Photo by Curt Borgwardt/Sygma/Sygma via Getty Images)
