As law officers search Arkansas' rugged Ozark Mountains for a former police chief and convicted killer who escaped prison this weekend, the sister of one of his victims is on edge. Grant Hardin, the former police chief in the small town of Gateway near the Arkansas-Missouri border, was serving lengthy sentences for murder and rape and became known as the “Devil in the Ozarks.” Hardin escaped Sunday from the North Central Unit — a medium-security prison also known as the Calico Rock prison — by disguising himself and wearing a “makeshift outfit designed to mimic law enforcement,” state prison officials said in a statement.