What on Earth?

Something strange in the Himalayas could be evidence of a top-secret CIA program to turn monks into killer agents, and cutting-edge science helps experts investigate the truth behind this mysterious anomaly.

Alien monoliths haunt the coast of England, an obliterated jungle points to a brutal narco gold rush and evidence of strange, blood red creature emerges from the deep.

A satanic symbol points to an army of the dead in Siberia. Then, scientists investigate a massive stone giant in a remote desert and uncover evidence of a Russian doomsday device right on America's doorstep.

Experts examine sinister mysteries such as zombie reindeer haunting the mountains of Norway, strange circles appearing in the sand by a secret US military base and a gigantic streak in the Arctic pointing toward alien life.

A fleet of sunken ships points to ghosts, cannibals, and bloodshed in early America. Strange Arctic holes baffle NASA scientists. Mysterious alien structures straight out of Star Wars are found near Area 51.

Recent discoveries from space give investigators new clues in the hunt for Jack the Ripper. When a strange object crash-lands in Antarctica, experts speculate it could be an alien visitor.

Experts investigate hundreds of shipwrecks in the middle of a desert in Africa and a ghost town where hundreds of its inhabitants have mysteriously died.

A site that could be the Garden of Eden hides a deadly secret. When a gateway to hell suddenly opens, experts investigate where it leads. A mysterious shipwreck could be an infamous KGB pirate ship.

Evidence of a mysterious 5,000-year-old structure suddenly appears in Ireland. A top-secret machine can see back in time. A satanic pentagram in the snow points to witchcraft in the New World.

Experts examine a strange circular forest next to a notorious cannibal site. Then, an eerie crater spotted in Siberia might be evidence of Nikola Tesla's doomsday device.