The Real Exorcist: For the first time, a participant in the real exorcism that inspires the movie The Exorcist reveals his experience. Dying of the Elk: Over 100 elk are found dead. All died in the last 24 hours, but the cause of death is a mystery.

Alien Skull: In Peru a tiny skeleton resists medical explanation. Is it a missing link in human evolution? Or proof of extra-terrestrial contact? Baltic Sea Anomaly: Wreck detectives ind a huge disc twice the size of a football field on the seabed.

Ex Deputy Sheriff Chuck Zukowski has been investigating phenomena across Middle America for 25 years. Now he spots a pattern: eye-witness reports of UFOs along the 37th degree parallel, the 3000 mile long line that runs through the heart of the U.S.

The Flannan Isles Lighthouse Mystery - three lighthouse keepers all disappear. How can three people vanish from a tiny island without a trace? Aleshenka - A Russian Police Captain is shocked to be handed what looks like a mummified alien baby.

A dead body shows up out of nowhere.

Bosnian Pyramids - An amateur archaeologist, claims he has uncovered five gaint pyramids in Bosnia. Russian Serpent - For centuries, strange reports of a large, underwater creature have come from people living near the remote Lake Labynkyr in Siberia.

The show investigates reported sightings of UFOs near some nuclear-weapon bases.

Lost Giants: In Borjami Valley a team of experts uncover bones they believe belong to a human over 9 feet tall. Bridge of Death: The 19th century gothic Overtoun Bridge in Scotland appears to be haunted, causing dogs to jump to their death.

Is there danger in our skies? Across America run-ins between planes and UFO's are reported, sometimes with terrifying and tragic consequences. Is the government covering up the truth behind these encounters?

Voodoo Zombies: Could modern day claims of zombie existence in Haiti be definitive proof that the myth of zombies is in fact a reality? Life After Death: Patients experience strange and uncharacteristic effects after life saving transplant operations.

A reform school allegedly haunted by shadow people is examined. Also: reports of miracles at Medjugorje.

From dragons to the Loch Ness Monster, mythical beasts have infiltrated many cultures. Is global warming creating conditions to help sea creatures breed?