Out of nowhere, Phoenix, Ariz. prison inmate stabs cellmate 13 times. Inmate: Instead of an insanity defense, I want to present the defense of “demonic possession.” Appointed counsel: That’s not a thing, and I’m absolutely going to present an insanity defense. Ninth Circuit: Appointed counsel violated the inmate’s Sixth Amendment rights. The inmate repeatedly objected to the insanity defense, and the buck stops with him.