Joanne Ratcliffe , 2 , and Kirste Gordon , 4 , were missing march 31 , 1973 . The girls were at Adelaide Oval with their parents for an exhibition match . The key suspect in the cold disappearance is ben Arthur Hart .
Joanne Ratcliffe , 11 , and Kirste Gordon , 4 , went missing August 25 , 1973 . The girls were at Adelaide Oval with their families for an AFL match . The key suspect in the cold case is Stanley Arthur Hart .