Ferdinand Magellan is universally credited as the first human to sail around the world. He never actually did it. He died a violent death halfway through the voyage, and the men who finished the trip came home and tried to erase his name from history. The sanitized dotted line on your high school map hides a dark, terrifying human story about what happens when blinding ambition crashes into an unmapped planet.

This episode follows the rejected, blacklisted Portuguese veteran who defected to Spain and bluffed a king with flawed maps and a human prop, the freezing mutiny at St. Julian he crushed with lethal force, the strait that bears his name, and the needless battle in the Philippines that killed him. It ends with the cover-up: a Spanish crown that erased him, a rival captain who took the glory, and the Venetian chronicler whose rogue press tour across Europe rescued the legend.

• The defection: how a limping, blacklisted veteran sold Spain on a route he could not actually prove
• Enrique the servant and the longitude problem: bluffing a king without a chronometer
• The mutiny at St. Julian: three captains, one beach, and a lesson in 16th-century command
• Death at Mactan: the battle Magellan had no reason to fight
• Pigafetta's notebook: the whistleblower diary that decided who history would remember