The Beaumont children disappeared on Australia Day in 1966, when they left their western suburbs home for an unsupervised visit to the beach and never returned. Their father, Grant, dies without ever knowing their fate.
Jane Beaumont, nine and her siblings Arnna, seven, and Grant, four, vanished on Australia Day in 1966 after leaving their parents' home for an afternoon at nearby Glenelg beach in suburban Adelaide.