Craig Mallon murder detectives are hunting a mystery woman who called emergency crews hours after the Scot's death as she may hold vital information.
The 26-year-old, from Coatbridge was killed by a single blow outside a nightclub in Spain's party resort, Lloret de Mar in the early hours of May 19, 2012.
Craig was on his brother, Bryan's stag-do in the Costa Brava town when a group of young men, believed to be French, attacked him and his friends as they left Rockefellers Bar in the early hours.
