Picture a 19-year-old billionaire's heir who reads a manifesto, gets radicalized by ideals of liberty, defies his own king, and secretly buys a ship to fight in a foreign war he has no stake in. It sounds like a spy thriller, but it is the documented beginning of the Marquis de Lafayette.

This episode peels back the mythology to find the human being beneath the legend, tracing how the man who helped forge American independence ended up a penniless prisoner of state, hunted by the very French revolutionaries he once inspired. It is a story of conviction, contradiction, and the brutal cost of walking the middle path.

• How an orphaned heir to a 120,000-livre income defied King Louis XVI and bought the ship Victoire, cargo and all, to sail for America
• The intern-who-saves-the-company move: serving without pay to win over Georg ...