On 17 December 1967, Harold Holt, the immensely popular prime minister of Australia, went for a swim -- and vanished. In the decades since, his family and the public still have questions about what exactly happened. In tonight's episode, Ben, Matt and Noel explore a mystery that remains unsolved in the modern day, along with a meditation on empathy, and a bevy of increasingly bizarre conspiracy theories.

What is an oligarch?
1:18:02

CLASSIC: The 1969 Berkshire UFO Incidents: What actually happened?
1:10:59

The Epstein Files: What We Know So Far
1:17:19