When Lisa Knopp visited Nebraska's death row with other death penalty abolitionists in 1995, she couldn't have imagined that one of the inmates she met that day would become a dear friend. For the next twenty-three years, through visits, phone calls, and letters, a remarkable, platonic friendship flourished between Knopp, an English professor, and Carey Dean Moore, who'd murdered two Omaha cab drivers in 1979 and for which he was executed by lethal...