JOHN BENJAMIN KENNEDY is a piece of work. And now, he is on trial for the sickening 1976 murder of a 17-year-old waitress in Oklahoma City. Detectives believe the 56-year-old convicted killer murdered Virginia Grace Kegans on Oct. 25, 1976. He was arrested last year after DNA linked him to the crime. It had come from the 1978 mutilation murder of a 15-year-old hooker. But now, prosecutors need to determine if there is enough evidence to go forward.According to The Oklahoman, the case was so old that some police reports and evidence was missing. But yesterday, an old friend of Kennedy's told the court: he kept the knife in a sheath in his car and also
