At 10am on January 26, 1966, Nancy Beaumont kissed her three children goodbye as they boarded the bus for a trip to the beach.

Nine-year-old Jane was considered old enough (by 1960s standards) to care for her younger siblings, Grant, seven, and Arnna, four, for the day and the three children had made the short journey to Glenelg beach many times before.

But this day was different.

The children were expected home by 2pm, but that time came and went with no sign of them. At 7.30pm, Nancy’s husband Jim called the police.

What followed was one of the biggest manhunts the nation had ever seen. More than 52 years later, the manhunt continues.