On January 26 1966, Jane, Arnna and Grant Beaumont left their home to celebrate Australia Day with a day at Glenelg Beach. When the children didn't return two hours later as promised, their mother assumed that the children either missed the bus or decided to walk home. When they hadn't returned by nightfall, Nancy and Jim Beaumont reported the children missing to police. Though many witnesses reported seeing the children that day, no evidence was ever found to explain what happened to them.
Where did they go? Who was responsible?