Jeffrey Dahmer of Wisconsin was abducting young males, strangling them to death, then having sex with their dead bodies. But he noticed that, once dead, they became stiff and started to smell bad, so he got the bright idea to bore a large hole into their skulls and then pour acid into their brains, to keep them 'alive' as a kind of zombie for his sexual pleasure, instead of killing them. But they died anyway. He was keeping ~17 of their severed heads in his refrigerator, and cooking their arms and legs and other body parts in large pots on his stove.
The death penalty for Jeffrey?
Wisconsin is too liberal for the death penalty. He was sentenced to over 900 years in prison instead.
Fortunately, one of his fellow inmates bludgeoned him to death while he was serving his prison sentence.