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 Gallery, is an expert on the works of Holbein and points out some truly astounding aspects of the work.

But history and art isn't all this episode of "The Revealer" has to offer. A groundbreaking advance from Internet search brand Google is bringing physical history to the digital world. Some amazing new technology is taking high resolution scans of art like "The Ambassadors" to bring them to the internet, down to the smallest stipple.