The murder case of Robert Higgins, who was brutally killed in 1995, has been re-examined by experts in a new BBC Scotland series.
His body was found dumped in an unused quarry in Kirkliston, near Edinburgh, a couple of days after he failed to return home from a night out at the pub.
His killer still remains a mystery - and the cold case is the topic of an episode of David Wilson's Crime Files: Cold Cases which airs tonight at 10pm on BBC Scotland.