The Unexplained

Forensics experts try to identify remains as those of Jesse James.

A new theory says the pyramids were built to propel souls to heaven.

A robot journeys through the tiny passages of an Egyptian pyramid.

Karnak, an Egyptian shrine.

New revelations suggest that Leonardo da Vinci made the historical shroud of Turin.

The science behind lie detection and the effectiveness of the polygraph test.

The role of sleep deprivation in some of the great disasters of modern time.

Examination of space theories.

Some tell of seeing a giant apelike creature, sasquatch.

Debate addresses whether near-death experiences are spiritual or physiological phenomena.

Ancient teachings on death and dying, including the Dalai Lama and Buddhism.

The search for compassion and truth form the foundations for Buddhist philosophy.

It was America's bloodiest war...a war some believe is still being played out. We focus on paranormal and spiritual activity at three Civil War sites: Gettysburg's Farnsworth House, occupied by Southern sharpshooters; Mississippi's McRaven House, a field hospital during the Battle of Vicksburg; and Tennessee's Chickamauga battlefield.

Interviews with archaeologists and historians suggest why Stonehenge might have been constructed.

The Knights Templar rise to power before being unjustly persecuted and burned at the stake.

Intrigue, controversy and scandal surround attempts to unravel the Dead Sea Scrolls.