Steven Gregg is the half-her-age boyfriend of aged socialite Barbara Spiegelman and a swindler of older women he seduced. When Barbara was killed, Gregg was the prime suspect, his lawyer Sally Knight pushing him to plead guilty and give a false confession.
Gregg was absolved of charges after his confession didn’t match the murder and the real killer, Barbara’s lawyer Kevin Doyle, was identified. (L&O: "Right to Counsel")