Seismic results guide the team to a possible network of tunnels in the Money Pit, while Gary unearths the first evidence of a French presence that could rewrite the history of the Oak Island mystery.

The roots of America's war on drugs reveals secret assassination attempts, the CIA's bizarre experiments with LSD and support of heroin traffickers.

Caiaphas, High Priest of Jerusalem, faces an impossible dilemma. Caught be-tween determination to preserve his faith and the might of Rome, he must judge how great a threat Jesus of Nazareth might pose.

Speed, the ability to react and move, can often mean the difference between life and death in the animal kingdom. Some animals have evolved into championship fliers, swimmers and runners.

  Bob and John have followed hundreds of international declassified files all the way from Berlin to Chile, where they now investigate a secretive German community with reported Nazi ties.

President Barack Obama reflects on his historic presidency; we feature his thoughts on where the country was when he was elected, where it is now, and where he sees it going under his successor's command.

A new hunt for the mysterious Zodiac Killer unearths a complicated cipher that may contain the killer's name, and links between the killer and an unsolved case. A prime suspect with code training emerges.

  Thousands of people from every part of the world have reported being abducted by aliens, could the alien abduction phenomenon be true? But if so, why are people being taken? Why are they being returned?