Five - year - old Caroline Hogg disappeared while playing outside her Beach Lane home in the Edinburgh suburb of Portobello in the early evening of 8 July 1983 .
Five - year - old Caroline Hogg is black 's youngest known victim .
Five - year - old Caroline Hogg , Black 's youngest known victim , disappeared while playing outside her Beach Lane home in the Edinburgh suburb of Portobello in the early evening of 8 July 1983 .