Gordon Hamilton died a decade ago with no criminal record, but during Angus Sinclair's two-week trial he was painted as a monster.
The World's End pub was where the two women had been
Unlike his friend and brother-in-law Sinclair, who has had the World's End pub murder charges dropped against him, Mr Hamilton had no previous convictions.
However, it was claimed in a special defence used by Sinclair that Mr Hamilton was the 1977 killer of Christine Eadie and Helen Scott.
Mr Hamilton was a working-class boy who grew up in Glasgow with six brothers and three sisters.
The football and karate fan, who worked in a Glasgow warehouse, was described as "a bit of a loner" and had no real friends.
It was Mr Hamilton's close family ties with Sinclair that brought the pair together.
His sister Sarah married Sinclair and their brother David was Sinclair's closest associate.
Mr Hamilton stayed with 32-year-old Sinclair and Sarah in Glasgow in 1977.
During that time, Sarah revealed that her husband and 22-year-old brother would go off on weekend trips in Sinclair's caravanette, claiming they were going fishing, but they would return without fish.
Mr Hamilton met his future wife in 1978 and on the day of their wedding, he and Sinclair had a massive fall-out and never spoke again.
The reason for the argument was never known.
The two women's bodies were found shortly after their murders
In the 1980s, Mr Hamilton became a down and out and died of a heart attack during an emergency operation to fit a pacemaker in 1996.
His body was cremated and the family burned his belongings.
Only his photograph appeared in court.
Prior to his death, Mr Hamilton had a girlfriend who worked for a homeless charity and lived in the Gallowgate area of Glasgow. He had decorated the bedroom for her and put up a polystyrene cornice.
The house was later owned by an elderly woman who had not redecorated.
In 2005 she allowed police to take the wallpaper and a section of cornice down and they took partial DNA samples from the point where two pieces of cornice were "pinched together" at the corner.
These were sent for tests and came back as a complete match to the DNA profile obtained from a swab from the bodies of Christine and Helen.