Merging the stealth and tactical advantages of sea and sky, the I-401 aircraft carrier submarine carried three specially designed Seiran attack bombers. The vessel had the potential to change the course of the war in the Pacific. Japanese SuperSub, investigates Japan's efforts to take submarine technology where it had never gone before, and reveals how close the Japanese came to using the sub for an attack on the U.S.

It is the most famous painting in the world, created by the hand of a genius, marveled at by millions every year in the Louvre in Paris, but could there be a second Mona Lisa? In 1913, an interesting portrait surfaced, the so-called 'Isleworth Mona Lisa.' Using sophisticated scientific analysis, scientists will test both paintings to determine whether Leonardo da Vinci painted an earlier version of the iconic portrait.

Dr. Kathleen Martinez, criminal lawyer turned maverick archaeologist, searches for Cleopatra's lost tomb. Very little evidence remains of Egypt's last queen, but Kathleen's radical new theory about the real Cleopatra has led her to look where no one else has dared and her hunch is paying off. Could Kathleen be closing in on Cleopatra's final resting place?

Art historians attempt to find out the truth behind Dutch artist Vincent van Gogh cutting off his ear. Everybody has heard about when Vincent van Gogh looked into a mirror and cut into his own ear. Bernadette Murphy, an independent researcher, has uncovered definitive evidence which reveals exactly what happened that night, and how it ultimately shaped van Gogh's remarkable art. Murphy's detective work finally provides answers to the mystery that...