You Won’t Believe These Kids Turned Out To Be Monsters Jeffrey Lionel Dahmer Dahmer became a serial killer and sex offender, committing rape, murder and dismemberment of 17 men and boys. His later murders also involved necrophilia and cannibalism. Prev Next Pages: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21