BLAZE

A couple spot a huge blimp-shaped craft hovering over Michigan's Lake Erie in 1988. In 1963, two sisters and their housekeeper report being knocked down by a UFO emitting flames.

In 1993, a teenage girl walking her dog in Shropshire, England, witnesses a cylindrical object in the sky. School kids in Florida report multiple UFO sightings in 1967.

Behind the Gates - The Fugal Factor: Matty Blake meets Brandon Fugal to discuss his purchase of Skinwalker Ranch in 2016, getting new insights about the team's investigation.

Behind the Gates - Circling the Triangle: Dr Travis Taylor takes a look back at the shocking events that have occurred during the investigation of the so-called Triangle.

UFO sightings and claims of alien abduction go hand in hand, but never-before-seen evidence brings new credibility to the alleged alien implants left behind.

...Camera - Top 100. New. A collection of standout videos from season one, showcasing the most chilling and unexplainable paranormal activity footage captured by eyewitnesses.

A ventriloquist leaves Karen and Bobby J speechless, while an angry mixed martial arts fighter takes a swing at Byron.

Incredible Structures: Investigate 75 million years of credible evidence suggesting aliens have visited Earth. From cave drawings to phenomena in the skies.

Giorgio Tsoukalos takes a look back at the most extraordinary encounters that, as far as he's concerned, provide evidence of an extraterrestrial presence on Earth.

Join antiques expert and presenter David Dickinson as more collectors try to sell their items to dealers. Will they strike a deal or take a chance at auction instead.

Join antiques expert and presenter David Dickinson as more collectors try to sell their items to dealers. Will they strike a deal or take a chance at auction instead.

Rick travels over to Boston to get a steal on an amazing Red Sox baseball collection - while back at the shop, Corey targets an interesting WWII jacket.

Buyers clash over a playground, a treasure trove of bicycle gear and a mystery container.

Sean takes the bidders to the home of the LA County Fair for a behind the scenes tour.

Still in Hawaii, Sean takes the bidders deep into the island to hidden storage bunkers.

When Les puts the kibosh on Seth's outlandish plan to boost business, father and son head to the race track to decide who's boss.

The Golds gear up to shoot a new commercial for the store which can only mean drama. Will everyone be happy with the final result.

Karen brings in a Feng Shui expert in the hope of boosting sales and gaining a positive energy. But Ashley and Seth have some serious doubts.

Startling evidence suggests contact with interstellar travelers in the distant past may have influenced mankind and many of our sacred sites.

While conducting a drilling operation at the Triangle Area, the team not only detects dangerous energy spikes, but also discovers something otherworldly.

Alien Sabotage, Ghost Child and Hungry Hungry Sasquatch: Strange creatures are encountered and a home security video may be proof that UFOs are messing with technology.

Secrets of the Sterncastle: Matty and Tony join another epic hunt with the Fisher family to search for a motherload of treasure linked to the Atocha.

When someone brings in an antique key gun, can the Pawn Stars unlock the mystery behind it? Then, a rare 1600s blade slices its way into the shop.

The bidders take a trip out to Hawaii for an auction at a marine life park.

Buyers battle to score an item that appears to be a covered car. But when the tarp is pulled back, will the winner drive away with cash or trash.

Giorgio Tsoukalos takes a look back at the most compelling investigations of all, and events that he believes represent real encounters with extraterrestrial visitors.

Giorgio Tsoukalos takes a look back at the most compelling investigations of all, and events that he believes represent real encounters with extraterrestrial visitors.

Using archival recordings, transcripts and incident reports, UFO researchers investigate what really happened during incredible encounters with UFOs.

Sean takes the bidders to the home of the LA County Fair for a behind the scenes tour.

Still in Hawaii, Sean takes the bidders deep into the island to hidden storage bunkers.

Join antiques expert and presenter David Dickinson as more collectors try to sell their items to dealers. Will they strike a deal or take a chance at auction instead.

The Hat of Teeth, the Killer Shockbox and the Amazonian Quiver: Examine a hat emblazoned with teeth, a box with the power to kill and a golden quiver from a Macedonian tomb.

Learn about the hunting of Jack the Ripper from space, the battle of the big guns in the land of the Bible, the clash of the mega-beasts, and a visitation from another galaxy.

Walk among colossal wonders scattered across the Earth's surface, including an ancient reptile skeleton, a massive head carving and a giant South African footprint.