Secrets of popes, rewritten laws, and cities lost to the waves these divine discoveries shake our beliefs and uncover mysteries of truly epic proportions.

From a long-lost keepsake tied to the world's most famous astronaut, to a giant flying reptile that once ruled the skies, and even a previously unknown planet orbiting two suns...some extraordinary discoveries remind us to keep looking up.

Three smiths hope to cash in when they are given the opportunity to win money after each challenge. After two tough rounds that test their memories to the max, all three smiths head back to their home forge to recreate the deadly serrated Dussage.

On this special episode, we honor the brave men and women who defend our country by celebrating the many weapons that have shaped our nation's history. Join us as we count down the top ten military blades that have appeared in our arena.

Step aboard and discover how Titanic safety designs backfired, with shocking engineering flaws that led to one of history's greatest disasters.

Relive history's deadliest battles, from Cannae and Agincourt to Stalingrad and the Battle of the Bulge.

Examining Scotland's long-standing aquatic mystery, which remains unsolved after centuries of theories, sightings and searches.

Examining the world-shaking events of November 22, 1963 in Dallas, Texas which, for many, have still not been satisfactorily explained over half a century later.

Examining the enduring mystery surrounding the group of 16th-century settlers who seemingly vanished without trace from Roanoke Island, off the coast of North Carolina.

Forget the monsters under your bed. The real ones, from dinosaurs to mythic beasts, are out there just waiting to be unearthed.

Secrets of popes, rewritten laws, and cities lost to the waves these divine discoveries shake our beliefs and uncover mysteries of truly epic proportions.

From a long-lost keepsake tied to the world's most famous astronaut, to a giant flying reptile that once ruled the skies, and even a previously unknown planet orbiting two suns...some extraordinary discoveries remind us to keep looking up.

Three smiths hope to cash in when they are given the opportunity to win money after each challenge. After two tough rounds that test their memories to the max, all three smiths head back to their home forge to recreate the deadly serrated Dussage.

On this special episode, we honor the brave men and women who defend our country by celebrating the many weapons that have shaped our nation's history. Join us as we count down the top ten military blades that have appeared in our arena.

Step aboard and discover how Titanic safety designs backfired, with shocking engineering flaws that led to one of history's greatest disasters.

Relive history's deadliest battles, from Cannae and Agincourt to Stalingrad and the Battle of the Bulge.

Counting down ten mysterious mountains that are notorious for otherworldly phenomena. From a summit in Sri Lanka that is said to be a portal to other worlds, a volcano in Washington that was at the center of a famous UFO sighting.

The Aztecs built one of the world's most powerful and feared empires, and they claimed that they were guided by a pantheon gods. Could the incredible story of their rise to power reveal a history of extraterrestrial intervention in Mesoamerica?

Across the globe, reports of mysterious glowing orbs are on the rise. Their movements defy the laws of physics, and now they are even being reported near military bases and nuclear weapon facilities. Do they represent a non-human intelligence?

Clash Of Ancient Warriors

Persian King Darius the Great sent an expeditionary force to Greece in retaliation for Athens' support of a revolt by the Greek cities of Ionia. The Persian army landed near the plains of Marathon, where it was met by the Athenian army.

At a four-generation family homestead in Illinois, Mike uncovers the mother lode of saloon relics and gambles big money on an ultra-rare slot machine. Down the road in Vermont, Robbie and Jersey try to broker a deal with a Mack truck fanatic.

In West Covina, Brandi makes a serious land grab and it pays off handsomely. Rene can't resist the mystery of a good safe. Kenny can't seem to satisfy his hunger, while Barry takes an opportunity to poach from the competition.

The doctor is in... in Riverside. Rene goes big. Ivy scores a packed locker and stumbles across an antique of unusual origin. Darrell grabs a smaller unit but finds that good things do, indeed, sometimes come in petite packages.

Rene has lukewarm results bobbin' for profits in Stanton. Dusty finds a hoard of quality equipment, inking himself a decent payday.

All the whales are coming to the big auction in Fullerton... or at least, that's what Barry hears as he takes Dusty under his wing to see what kind of profit he can style.

From soaring skyscrapers like One World Trade Center to impenetrable vaults like Fort Knox, humanity’s strongest structures were engineered to defy disaster but in a world without people, even the mightiest begin to crack.

Hidden dangers once held at bay by humans erupt with catastrophic force, from everyday objects ready to explode to chemical plants and locust plagues, as nature and human legacy collide, these ticking time bombs threaten to send the world up in smoke.

Counting down ten mysterious mountains that are notorious for otherworldly phenomena. From a summit in Sri Lanka that is said to be a portal to other worlds, a volcano in Washington that was at the center of a famous UFO sighting.

The Aztecs built one of the world's most powerful and feared empires, and they claimed that they were guided by a pantheon gods. Could the incredible story of their rise to power reveal a history of extraterrestrial intervention in Mesoamerica?