A missing Van Gogh painting could be in London, researchers say. “The descendents of Belgian doctor Amadeus Cavenaile say Van Gogh painted the portrait after the doctor treated him for syphilis in 1885. His family, some of whom live in the UK, believe the painting was either brought to London or buried in a garden in Antwerp during World War I. If the painting is found, it could net the owner up to £50 million.”