Season 4 - Episode Guide

Tidal waves are responsible for an enormous loss of life and property, yet often not considered as threatening as other natural disasters. Past tidal wave effects as well as future efforts to counteract potential damage is presented.

Carlos, The World's Most Wanted Man: A chilling profile of the playboy-turned-terrorist called Carlos the Jackal, who was called "The World's Most Wanted Man."

In 1994, Carlos was given up to French intelligence by the Government of Sudan, was charged and subsequently convicted of murder of an informant and is serving a life term in prison, which was lengthened with an additional life term for a terrorist attack on French soil.

The Amityville Horror: A dream house in a lovely suburb becomes a nightmare when the owners discover an evil presence. The house was the site of a family massacre in 1974, which would inspire the 1979 movie and its 2005 remake.

An overview of the prevalence of UFO sightings in the Southern Hemisphere with an in-depth look at an Australian pilot who described his abduction while in contact with air traffic controllers.

Sharks are a source of great curiosity and concern and among the sharks the most feared is the Great White. Expert testimony and reenactments demonstrate examples of the awesome power, adaptability, and immense danger of the Great White.

The Lost Colony of Roanoke: A look at new evidence which offers an intriguing theory about where the colonists went.

This segment examines the authenticity of the Shroud of Turin, which many believe is the actual burial cloth of Christ and that it bears His image.

In Mexico and Guatemala stand great temples and pyramids built long ago by the Aztecs and Mayans, two extremely advanced civilizations. Despite their many breakthroughs much of these cultures and their practices remain shrouded in mystery.

The Abominable Snowman: Leonard Nimoy examines the experiences of the explorers who say they have actually sighted the legendary creature.

This great Roman city was a wealthy resort and mecca for fun-lovers before it was destroyed by the eruption of Mt. Vesuvius. Were early Christians among the Roman revelers?

D. B. Cooper: The incredible story of the man who hijacked a jetliner, parachuted out with his loot, and was never seen again.

The Ten Commandments: Leonard Nimoy profiles Moses and tries to pinpoint Mount Sinai's exact location. Have pilgrims to the Holy Land been praying at the wrong location?