Sir William Browder ("Bill"), a financier turned justice advocate, is our guest for this episode of our ongoing series on extreme wealth. Bill has been the engine behind the Magnitsky Act, a law that for the past 12 years has empowered governments to seize the assets of foreign leaders who abuse human rights — a significant countermeasure against corruption and atrocity that has exasperated Vladimir Putin and oligarchs in Russia, where Bill was once a leading foreign investor. His experience working in (and subsequently abandoning) Russia allowed him to see inside that culture and economy, and have led him to conclude Putin's military conquests as a dictator's efforts to protect his unfathomable stolen wealth — and his own neck.

Bill Browder is the founder of Hermitage Capital Management, a firm that became the top foreign investor in post-Soviet Russia. For nearly 20 years he has been the target of Russian prosecution efforts that have drawn round condemnation from the international community, as he continues to promote the rule of law and denounce the regime of Vladimir Putin. He's the author of "Red Notice: A True Story of High Finance, Murder and One Man's Fight for Justice" and "Freezing Order: A True Story of Russian Money Laundering, State-Sponsored Murder, and Surviving Vladimir Putin's Wrath."