By Back|Story staff, CNN "The Revealer", on Back|Story, takes us to London's National Gallery to examine a painting from 1533 called "The Ambassadors". It was depicted by artist Hans Holbein. The painting is full of small mysteries and little intriguing clues to messages that the artist may have been trying to convey. Susan Foister, of the National … Continue reading The Revealer: Secrets in a Work of Art