The search for Holt was exhaustive. Diving teams entered the rough waters repeatedly but were unable to find any evidence or clues to his disappearance.

Zara Holt arrives at Cheviot Beach, the location where her husband had entered the rough sea and disappeared. Holt’s Press Secretary, Tony Eggleton, assists her through the media scrum.

Marjorie Gillespie walks up from the beach.

Did Holt intend to withdraw troops from the war in Vietnam?

Dame Zara Bates was in Canberra when the tragedy happened. She was hastily flown to Melbourne and driven to the Cheviot Beach.

Andrew Helps was a police constable who risked his own safety by searching for Prime Minister Harold Holt in a small boat.

As each day passed hopes dimmed in finding any trace of the Prime Minister, let alone finding him alive. It was probably the most exhaustive search for an individual Australia had undertaken.

Lieutenant-colonel John Bennett was in charge of the army's search for Harold Holt.

On 31 March, 1966, the 'newly minted' Prime Minister, Harold Holt, participated in the laying of the foundation stone for the National Library of Australia.