When a strange pattern appears in a field, experts wonder if its an extraterrestrial response to a message sent to an alien star cluster in 1974, and using cutting-edge science, they uncover its true origin.

When a sinister cave is discovered in a remote corner of Iceland, experts uncover a secret underworld tunneling to unknown depths, and using cutting-edge tech, they investigate if this strange place could hold secrets of alien worlds.

In the white ice of Antarctica, satellites discover a mysterious trail of sinister black objects, and when experts discover that it's moving.

When a strange structure is discovered in the Gobi Desert, experts investigate if this mysterious site could reveal the whereabouts of lost treasure, which might change everything known about Genghis Khan and the Mongol warriors.

A strange, red plane is discovered near the sight of the Roswell UFO incident.

Magic circles in the land of King Arthur; The secrets of NASA's alien desert; Weird jungle ciphers in the Amazon; The clifftop cave of horrors, filled with hundreds of human remains; Levitating Monks of the Shaolin.

Hitler's secret horror lab revealed; The weird new terror plot to bring down America; The mystery temple on orgy island; Death in paradise; The death ray with the power of 10,000 suns; The stinking river of death.

The citadel of super warriors who crushed the legions of Rome; A Pac-Man army reveals a code hidden under Saharan sands; A terrifying new menace on America's shores; The Aztec's mystery Martian crater; Nukes, CIA coverups, and 2 billion hits of LSD.

The code of the Norse Gods revealed from beyond the grave; Something big and weird in the skies over Missouri; The nightmare of America's toxic timebomb; The mystery of Hitler's ghost ships; A unidentified mega-plane on a remote Mojave runway.

The mystery Louisiana swamp castle; America's 100,000 square mile cipher; Russia's deadly mega-chasm; The invisible killer stalking Africa's elephants; Did Irish Monks discover America?

The mystery structures that transformed the world; Written in sand, the blood code of the Samurai; Nazis, knights and vampire graves in the forest of Poland: The man who took on an Empire and won; The day they bombed Idaho with beavers.