Raiders of the Lost Art: Season 1, Episode 3

1 - 3: Van Gogh's Guardian

When Van Gogh died he was a complete unknown, his paintings fetching under 10 dollars. So how did his works become some of the most revered and expensive in the world? His sister in law Johanna is to thank for that. With a new Van Gogh having been discovered just last year, where are the rest?