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.

Pressie: The Serpentine Cryptid of Lake Superior
1:17:13

CLASSIC: Child Soldiers: A Hidden Horror
58:21

Blood Magic: The Fact and Fiction of Human Sacrifice
1:10:01