Van Gogh's Guardian (S01E03)

Vincent van Gogh passed away in obscurity, with his artworks barely selling for ten dollars each. Yet, his masterpieces have since risen to become some of the most esteemed and valuable in art history. The credit for this transformation largely goes to his sister-in-law, Johanna. Following the recent discovery of a new Van Gogh painting, the question arises: where are the other hidden treasures?