This story definitely has a "Dan Brown"-type of intrigue to it: a small flag within an existing painting contains the words, "Cerca Trova" (or "seek and you shall find").

Those words lead Dr. Seracini, an engineering professor[1], to investigate whether or not Leonardo Da Vinci's unfinished masterpiece is hidden behind by that painting (containing the words, "Cerca Trova") using some very technological advanced equipment and techniques.

1. http://www.nytimes.com/2009/10/06/science/06tier.html?_r=2&#...