By Kenneth Roy
The basic facts are these. Naimh Frances Bysouth (or Lafferty), born on 18 June 1994, and Terrie Faye Oliver (also known as Georgia May Rowe), born on 13 February 1995, walked a distance of three miles from the Good Shepherd Centre, in Bishopton, Renfrewshire, to the Erskine Bridge, arriving near the centre of the bridge just before 9 o'clock on the evening of Sunday 4 October 2009. They had walked for about an hour to their pre-planned destination.