In the early 1930s, a booming voice reached across America through mattress springs and barbed wire, selling a surgery that implanted goat testicles into men. Behind it was John R. Brinkley, a man who rose from crushing poverty to become one of the country's wealthiest doctors, a broadcasting pioneer, and a political powerhouse built entirely on a dangerous lie.

This deep dive traces his chaotic path from a fraudulent diploma and colored-water injections to a media empire, and finally to a self-inflicted collapse when his ego dragged him into a libel trial that exposed everything.

• His unconventional birth, orphaned childhood, and purchase of a fake medical certificate from a diploma mill.
• The goat gland surgery, its viral goat gland baby publicity, and the deadly infections and lawsuits that followed.
• His radio st ...