Jeffrey Dahmer's deeds beggar the imagination. The 31-year-old former chocolate-factory worker, who is charged with the murder of 15 young men, reportedly drugged some victims and performed crude lobotomies on them in an attempt to create zombie-like companions. He had sex with some corpses and dismembered bodies, tossing hands in a kettle and storing a severed head in the refrigerator as well as a heart to be eaten later. Who doubts that Dahmer's behavior is mad? But is he insane?
That's the vexing question that will face 12 jurors in the trial that opens this week in Milwaukee. Dahmer has pleaded...