Did aliens help build the Pyramids and other monuments? Or does the "ancient astronauts" idea go back to Swiss author Erich von Daniken, whose books challenge religion and science? Who were his enemies? What were his influences? Why was he jailed?

Unravel the seamy secrets of Las Vegas. Where Mobsters once ruled. Where casinos suck you in to keep you playing and losing. Why was this a Nazi target for wartime sabotage, a test ground for Atomic Bombs, and a meeting place for 9/11's terrorists?

The world’s most famous prison holds many secrets. We’ll explore a conspiracy that helped three inmates escape, reveal the truth behind the dungeon of Alcatraz, and discover the remnants of a mysterious military outpost with links to Abraham Lincoln.

Discover the truth behind the UFO cover up. Is there a hidden “shadow government” that guards the truth, even from the President? Did a Nazi flying saucer crash in New Mexico? Are aliens living at Area 51? Or are these rumors a cover-up for the real story?

Secret bunkers exist under every American city, but only a lucky few know about these hidden survival complexes. CODES AND CONSPIRACIES examines the underground bunkers that have been a feature of warfare planning since the dawn of time.

Discover some of America's most infamous cults. Whether its religious fire-and -brimstone, Armageddon, or visitors from outer space, the US has no shortage of like-minded people coming together to get swept up in the fervor.

Gold ...one the most rare treasures on Earth. Since ancient times, man has gone to extreme and often deadly lengths to get it. But where is most of the gold today, and who owns it?

From the rallies held at Madison Square Garden, to the plots to steal the secrets to the nation's weapons of war, the American Nazis terrorize the United States in the 1930s and wage a battle against the FBI and an undercover team of amateur spies.

Discover which of America's founding fathers was a master of deceit, which one used sex as an instrument of diplomacy, which one secretly scoffed at the divinity of Jesus, and which one engaged in the greatest cover-up in all of American history?

The Freemasons, secretive even among secret societies, are intertwined with American history. Some even say Washington, D.C. is laid out as a Masonic code. What other secrets are the Masons hiding?

At the height of the Cold War, the United States of America searches for a way to create a generation of "Supersoldiers" who use telepathy to win battles. In the 1950s gangster Whitey Bulger volunteers for the CIA's LSD project known as MK-Ultra.

American code breakers have given the United States an edge in every conflict in American history. But with uncrackable encryption available for your cell phone and computer, have U.S. code warriors finally met their match with enemies who have perfected.

Pearl Harbor...the Day of Infamy that changed America forever. But was the attack really a surprise? What did FDR know about the attack beforehand? And who really fired the first shots of the Pacific War?

The Vatican is a secretive, watchful institution that protects its reputation and the members of its ranks with fierce, often reckless abandon. But the secrets and scandals throughout its history are some of the darkest in all of history.

Discover the real story behind one of society's most clandestine institutions: brothels. Hidden within these bordellos are secrets about famous patrons, governments and even religion. Find out why these sex dens have endured for thousands of years.

They have been romanticized by the media and feared by the government, but much about Outlaw Bikers is still shrouded in mystery – until now. Discover the truth behind one of America’s homegrown secret societies.

Lost to the hands of time... or intentionally covered up, the dark history of America's Secret Prisons will be revealed.

From a secret society that gathers in the dead of night and plots the assassination of Abraham Lincoln to U.S. spymaster Alan Pinkerton who stops Confederate agents, the outcome of the Civil War is often decided by spies.