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Secrets of the Dead

The Mona Lisa Mystery

Video duration: 54:41Expires: 12/14/15Video has closed captioning.

Hers is the most famous smile in the world, visited and studied by thousands every year, a priceless work of art —the one and only Mona Lisa. Or is it unique? With its striking similarities to the painting in the Louvre Museum, the so-called Isleworth Mona Lisa has remained an art world mystery since she was found in 1912. Did Leonardo da Vinci paint the legendary portrait twice?

Episodes of Secrets of the Dead9

Video thumbnail: Secrets of the Dead Vampire Legend

Secrets of the Dead

Vampire Legend

Follow scientists as they uncover the true origins of modern vampire lore

54:41

Vampire Legend

54:41

Video thumbnail: Secrets of the Dead JFK & LBJ: A Time for Greatness

Secrets of the Dead

JFK & LBJ: A Time for Greatness

In many ways, President Lyndon B. Johnson was the most unlikely champion of Civil Rights.

55:10

JFK & LBJ: A Time for Greatness

55:10

Video thumbnail: Secrets of the Dead Carthage's Lost Warriors

Secrets of the Dead

Carthage's Lost Warriors

This episode uncovers evidence that could rewrite the history of the Americas

54:41

Carthage's Lost Warriors

54:41

Video thumbnail: Secrets of the Dead Killer Flu

Secrets of the Dead

Killer Flu

Where did this particular flu strain come from, and what made it so deadly?

54:53

Killer Flu

54:53

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Clips of Secrets of the Dead28

Video thumbnail: Secrets of the Dead Teotihuacán, the City of the Gods

Secrets of the Dead

Teotihuacán, the City of the Gods

Who built the ancient abandoned city Teotihuacan, the City of the Gods?

2:02

Teotihuacán, the City of the Gods

2:02

Video thumbnail: Secrets of the Dead The Tunnel Below the Pyramid of the Feathered Serpent

Secrets of the Dead

The Tunnel Below the Pyramid of the Feathered Serpent

Archaeologists explore the tunnel below the Pyramid of the Feathered Serpent

3:52

The Tunnel Below the Pyramid of the Feathered Serpent

3:52

Video thumbnail: Secrets of the Dead Where did the ancient Teotihuacanos come from?

Secrets of the Dead

Where did the ancient Teotihuacanos come from?

Archaeologists examine the bones found at Teotihuacan to find out where tens of thousa

2:12

Where did the ancient Teotihuacanos come from?

2:12

Video thumbnail: Secrets of the Dead Kathleen Martinez's Quest to Find Cleopatra’s Tomb in Egypt

Secrets of the Dead

Kathleen Martinez's Quest to Find Cleopatra’s Tomb in Egypt

Could Taposiris Magna be the site of Cleopatra’s lost tomb?

3:22

Kathleen Martinez's Quest to Find Cleopatra’s Tomb in Egypt

3:22

Video thumbnail: Secrets of the Dead The foundation deposits discovered at TapOsiris Magna

Secrets of the Dead

The foundation deposits discovered at TapOsiris Magna

Kathleen Martinez discovered the foundation deposits at the temple of TapOsiris Magna.

2:20

The foundation deposits discovered at TapOsiris Magna

2:20

Video thumbnail: Secrets of the Dead Who was the real Cleopatra?

Secrets of the Dead

Who was the real Cleopatra?

What people know about Cleopatra is what we have seen in the movies.

1:50

Who was the real Cleopatra?

1:50

Video thumbnail: Secrets of the Dead The June 1962 Alcatraz Escape

Secrets of the Dead

The June 1962 Alcatraz Escape

What happened on the night of June 11, 1962 on Alcatraz Island?

3:03

The June 1962 Alcatraz Escape

3:03

Video thumbnail: Secrets of the Dead The SF Bay Model shows the escapees could have survived

Secrets of the Dead

The SF Bay Model shows the escapees could have survived

The Dutch scientists visit the physical model of the San Francisco Bay and delta system.

The SF Bay Model shows the escapees could have survived

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Previews of Secrets of the Dead42

Video thumbnail: Secrets of the Dead Teotihuacán’s Lost Kings: Preview

Secrets of the Dead

Teotihuacán’s Lost Kings: Preview

Follow scientists as they explore tombs beneath Teotihuacán for clues to a lost culture. 

0:35

Teotihuacán’s Lost Kings: Preview

0:35

Video thumbnail: Secrets of the Dead Cleopatra’s Lost Tomb: Preview

Secrets of the Dead

Cleopatra’s Lost Tomb: Preview

Discover whether an amateur archaeologist’s theory leads to the lost tomb of Cleopatra.

0:38

Cleopatra’s Lost Tomb: Preview

0:38

Video thumbnail: Secrets of the Dead The Alcatraz Escape: Preview

Secrets of the Dead

The Alcatraz Escape: Preview

Scientists investigate whether surviving an escape from Alcatraz prison was possible. 

0:38

The Alcatraz Escape: Preview

0:38

Video thumbnail: Secrets of the Dead Jamestown’s Dark Winter: Preview

Secrets of the Dead

Jamestown’s Dark Winter: Preview

Uncoverr the truth about the first permanent English colony in the New World

0:38

Jamestown’s Dark Winter: Preview

0:38

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