Derry boy Martin 'Mac' Connolly was only 15 years old when he passed away in 1997 leaving his mother and father devastated forever.
Martin's body was found in an alleyway behind shops on Beechwood Avenue in the Creggan area of the city after he inhaled butane gas.
The passing of the teenager left his family, including his father, mother, two sisters and brother, with a huge gap they've been unable to fill.
