Randy Haight
He executed a young couple, David Omer and Patricia Vance,  while they were inside their car. He shot the man in the face, chest, shoulder, and back of head and shot the woman in the shoulder, temple, back of head, and through the eye.
He spent all but two of his 15 adult years in four Ohio, three Virginia, and four Kentucky prisons.
Source: Â ?Kentucky Department of Corrections