In 1945 an armored Nazi train supposedly loaded with 300 tons of gold vanished into the mountains of southwest Poland. Seventy years later, two treasure hunters claimed a deathbed confession revealed its exact location, and a deputy minister told the world there was a 99 percent chance it was real.

This episode digs into the Walbrzych gold train saga, a modern case study in belief, sunk-cost thinking, and the power of a good story. We follow the failed excavation, the science that debunked it, and the ironic twist that turned an empty hole into an economic windfall.

• How Project Riese's unfinished tunnel network in the Owl Mountains gave the myth a perfect place to hide
• Why the Polish military searched the area for 40 years during the Cold War and found nothing
• How ground-penetrating radar anomalies got misread as  ...