Robert Foley, 55, was convicted of killing six people in eastern Kentucky in 1989 and 1991, making him the most prolific killer on the state's death row. His status as an extremely dangerous prisoner was a key factor in the state's difficulty finding a surgeon and hospital, according to documents obtained through a public records request and a lawsuit filed by Foley. Frankfort Regional Medical Center initially agreed, then declined. Foley still hasn't had the surgery.