From the Hudson Valley of upstate New York to the Sedona desert of Arizona, Shannon embarks on a trip to places around the US with a high number of UFO reports.

The team investigates UFO phenomena like Mothman, Flatwoods Monster, and eyewitness accounts.

Shannon meets with a witness in the White Mountains to learn about her close-up encounter.

Shannon investigates a purported 2017 UFO video and the claims of an eyewitness.

Ordinary people come forward with stories of being taken by UFO's; Shannon and her team visit a location where one of these abductions took place.

Explores discussing a very well-known mass UFO sighting with a witness, even though this isn't the only one ever made.

In the 1960s the cattle mutilation phenomenon became a widespread concern across the American west.

Searching for and discussing evidence of The Brown Mountain Lights with author Micah Hanks.

Searching for evidence in Area 51 of the cover-up of alien existence; while on their search, they learn of connections of conspiracy theories to UFO's.

An American Indian elder explains tribal beliefs regarding UFOs; New Hampshire residents recount an encounter with a strange craft.

From the Hudson Valley of upstate New York to the Sedona desert of Arizona, Shannon embarks on a trip to places around the US with a high number of UFO reports.

The team investigates UFO phenomena like Mothman, Flatwoods Monster, and eyewitness accounts.

Shannon meets with a witness in the White Mountains to learn about her close-up encounter.

Shannon investigates a purported 2017 UFO video and the claims of an eyewitness.

Ordinary people come forward with stories of being taken by UFO's; Shannon and her team visit a location where one of these abductions took place.

Explores discussing a very well-known mass UFO sighting with a witness, even though this isn't the only one ever made.

In the 1960s the cattle mutilation phenomenon became a widespread concern across the American west.

Searching for and discussing evidence of The Brown Mountain Lights with author Micah Hanks.

Searching for evidence in Area 51 of the cover-up of alien existence; while on their search, they learn of connections of conspiracy theories to UFO's.

An American Indian elder explains tribal beliefs regarding UFOs; New Hampshire residents recount an encounter with a strange craft.

From the Hudson Valley of upstate New York to the Sedona desert of Arizona, Shannon embarks on a trip to places around the US with a high number of UFO reports.

The team investigates UFO phenomena like Mothman, Flatwoods Monster, and eyewitness accounts.

Shannon meets with a witness in the White Mountains to learn about her close-up encounter.

Shannon investigates a purported 2017 UFO video and the claims of an eyewitness.

Ordinary people come forward with stories of being taken by UFO's; Shannon and her team visit a location where one of these abductions took place.

Explores discussing a very well-known mass UFO sighting with a witness, even though this isn't the only one ever made.

In the 1960s the cattle mutilation phenomenon became a widespread concern across the American west.

Searching for and discussing evidence of The Brown Mountain Lights with author Micah Hanks.

Searching for evidence in Area 51 of the cover-up of alien existence; while on their search, they learn of connections of conspiracy theories to UFO's.

An American Indian elder explains tribal beliefs regarding UFOs; New Hampshire residents recount an encounter with a strange craft.

From the Hudson Valley of upstate New York to the Sedona desert of Arizona, Shannon embarks on a trip to places around the US with a high number of UFO reports.

The team investigates UFO phenomena like Mothman, Flatwoods Monster, and eyewitness accounts.

Shannon meets with a witness in the White Mountains to learn about her close-up encounter.

Shannon investigates a purported 2017 UFO video and the claims of an eyewitness.

Ordinary people come forward with stories of being taken by UFO's; Shannon and her team visit a location where one of these abductions took place.

Explores discussing a very well-known mass UFO sighting with a witness, even though this isn't the only one ever made.

In the 1960s the cattle mutilation phenomenon became a widespread concern across the American west.

Searching for and discussing evidence of The Brown Mountain Lights with author Micah Hanks.

Searching for evidence in Area 51 of the cover-up of alien existence; while on their search, they learn of connections of conspiracy theories to UFO's.

An American Indian elder explains tribal beliefs regarding UFOs; New Hampshire residents recount an encounter with a strange craft.

From the Hudson Valley of upstate New York to the Sedona desert of Arizona, Shannon embarks on a trip to places around the US with a high number of UFO reports.

The team investigates UFO phenomena like Mothman, Flatwoods Monster, and eyewitness accounts.

Shannon meets with a witness in the White Mountains to learn about her close-up encounter.

Shannon investigates a purported 2017 UFO video and the claims of an eyewitness.

Ordinary people come forward with stories of being taken by UFO's; Shannon and her team visit a location where one of these abductions took place.

Explores discussing a very well-known mass UFO sighting with a witness, even though this isn't the only one ever made.

In the 1960s the cattle mutilation phenomenon became a widespread concern across the American west.

Searching for and discussing evidence of The Brown Mountain Lights with author Micah Hanks.

Searching for evidence in Area 51 of the cover-up of alien existence; while on their search, they learn of connections of conspiracy theories to UFO's.

An American Indian elder explains tribal beliefs regarding UFOs; New Hampshire residents recount an encounter with a strange craft.

From the Hudson Valley of upstate New York to the Sedona desert of Arizona, Shannon embarks on a trip to places around the US with a high number of UFO reports.

The team investigates UFO phenomena like Mothman, Flatwoods Monster, and eyewitness accounts.

Shannon meets with a witness in the White Mountains to learn about her close-up encounter.

Craig and Sarah look at the 1980 Yorkshire case of Alan Godfrey who was allegedly abducted by a UFO; Godfrey underwent hypnosis in support of his claim; other prominent U.K. and U.S. abduction claims are featured and the experts discuss.

Craig and Sarah study the evidence available for the mass UFO sighting over Phoenix, Ariz. in 1997.

The Stephenville UFO case from 2008.

Creatures that are seemingly half-man and half-beast, including the tale of a bloodthirsty werewolf-like creature that appears on a country road in Wisconsin.

People who cheated death.

Some of the world's most sacred sites, including the Great Pyramid of Giza, Chartres Cathedral and Masjid Al-Haram.

Mysterious writings, images and relics from the past, including the Nazca Lines, the Voynich Manuscript and the Crystal Skulls.

People who defy the laws of physics and perceptions of reality, from exceptional feats of endurance and miraculous recoveries to psychic abilities and exorcisms.

Some of the most mysterious monsters and mythical creatures that may inhabit this earth, including vampires, Bigfoot and the Loch Ness Monster.

Delve into the most convincing evidence that the planet has been visited by extraterrestrial life forms, from alien encounters in ancient texts to modern-day UFO sightings and the secrets of Area 51.

Crop circles fascinate with their patterns and possible extraterrestrial origin.

Three alien abduction cases in the U.S. provide testimony and evidence.

A secret alien-human collaboration in postwar Italy points to hidden encounters.

Across the abandoned villages, dark forests and hidden valleys of Alaska, tales are told of apelike creatures; Documentarian Seth Breedlove takes on the last frontier in search of the best evidence for the creature known as Sasquatch.

Sinister shapes hover over Chicago and Ruwa, Zimbabwe; an Australian is fighting for his life after taking a blast from a mysterious object; a UFO appears to taunt a U.S. military fighter jet over the Bermuda Triangle.

A pilot records a fleet of glowing UFOs over the South China Sea that appear and disappear; 12,000-year-old carvings at Karahan Tepe depict humanoids with mysterious features.

Digging into a UFO crash caught on camera in Brazil; a close encounter of the Beatles kind; finding out if aliens shut down a nuclear missile launch site in Montana; looking at the shapes of UFOs and considering a link between ghosts and aliens.

An alternative take on the 1969 lunar landing presents a different picture of the event that governments may be secretly covering.

Sightings around Sutton Lake help to act as a window into the greater Bigfoot mystery.

In the early '90s, a rural Wisconsin community becomes the center of a series of real-life werewolf sightings.

Journey to the Land Between the Lakes where real werewolves are said to lurk in the shadows.

Triangle shaped hovering objects are seen by thousands of people and investigated by scientists and government officials, yet they could never be explained; the sightings occurred in a more than two year wave over Belgium, beginning in late 1989.

In 1980, a UFO detected on military radar, lands near crucial NATO bases; a group of military personnel claim to have seen a shiny metallic object with colored lights and hieroglyphic inscriptions.

Billy Meier claims he's traveled through time and space with an alien race from the Pleiades star cluster; in the decades following his revelation, both skeptics and ufologists say it's a hoax despite Meier providing photographic evidence.

Tyler Hall & Tyler Burgoyne investigate a sighting. A tense night search and follow-up reveal possible clues.

Nathan Jenkins shares Bigfoot encounters and family history tied to Shenandoah legends.

Newly declassified documents may link the Roswell crash to Nazi science; fresh evidence may reveal what's really hidden inside Area 51; experts investigate the dark secrets of the Dugway Proving Ground.

New theories may shed light on the fate of aviator Amelia Earhart, hijacker D.B. Cooper and the three daring prisoners who escaped from the Alcatraz Federal Penitentiary.

New theories may shed light on the fate of aviator Amelia Earhart, hijacker D.B. Cooper and the three daring prisoners who escaped from the Alcatraz Federal Penitentiary.

Central Scotland has its very own Area 51, known as the Falkirk Triangle, encompassing the village of Bonnybridge, which claims the highest concentration of the region's UFO activity.

In December 1980, what is considered the biggest UFO case in U.K. history occurs at the U.S.A.F. base at Rendlesham, Suffolk.

A skydiver survives a fall when her parachute fails; the possibility of spontaneous human combustion.

A doctor finds carvings that may indicate humans and dinosaurs coexisted.

An Arizona woman claims to have been fathered by an alien in a top-secret government experiment.

Ancient and sacred sites with alleged healing powers, from the grotto of Lourdes and Machu Picchu to mystical rainforests and the Ganges River.

Inexplicable conditions and illnesses include cases of mass hysteria and rare syndromes like Stendhal and Munchausen.

Revered religious artifacts from around the world, including the Shrine of the Three Kings, the Ark of the Covenant and the Holy Grail.

Paranormal phenomena that baffle experts around the world, from ghostly encounters and spectral curses to spontaneous combustion and the mysterious Hum.

A closer look at the awe-inspiring structures that capture imaginations, including the Olmec Heads of Central America, the Alhambra in Spain and Angkor Wat in Cambodia.

Teotihuacan, the City of the Gods, still hides mysteries about its origin, layout, and cosmic alignments.

Claims suggest secret space programs have sent humans to Mars.

Billy Meier's UFO photos and prophecies bring him fame and controversy.

A journey into some of North America's most isolated forests in search of the legendary, Bigfoot; Seth Breedlove joins groups like The North American Wood Ape Conservancy, and The Ohio Night Stalkers as the seek evidence of the creature's existence.

A journey into some of North America's most isolated forests in search of the legendary, Bigfoot; Seth Breedlove joins groups like The North American Wood Ape Conservancy, and The Ohio Night Stalkers as the seek evidence of the creature's existence.

Accounts of an amphibious UFO in Indonesia; a mass abduction in Australia; a slew of deaths in Wales after a strange sighting; searching for an alien library with an astronaut and meeting a scientist hunting for an interdimensional portal.

Taking a look at strange crafts flying over power plants, airports and the Royal Palace in Sweden, a veteran with supposed UFO-related health issues and footage shown at a US congressional hearing.

Investigating reports of UFOs massed over the South China Sea, ancient carvings of alienlike humanoids, and Albert Einstein's secret 1947 visit to Roswell, New Mexico.

Exploring what compels people to hunt for Sasquatch particularly in West Virginia's challenging, remote and largely uninhabited wilderness.

Do real werewolves haunt the Lone Star State? Decades of eyewitness encounters paint a terrifying picture.

A young recruit encounters aliens in the Nevada desert in the 1960s; he claims they were working with the US military and housed a spaceship in a secret hangar nearby.

In the summer of 1952, stories of U.S. Air Force jets chasing UFOs over the White House knock the Korean War off the front pages of newspapers; as rumors spread, President Harry S. Truman demands to know what was flying over his house.

In 1978, UFO enthusiast Paul Bennewitz claims he's intercepted extraterrestrial messages; military officials send counterintelligence officer Richard Doty to feed Bennewitz lies, questioning whether Doty himself is a pawn in an even bigger scheme.

The crew analyzes eerie audio with Devin Kouts, comparing it to known animal sounds.

Tyler Hall's team hears a chilling howl after new Bigfoot reports in Shenandoah Valley.

New theories about labor leader Jimmy Hoffa's disappearance are revealed; a film clip may reveal what really happened to Michael Rockefeller who went missing off the coast of Papua New Guinea; experts investigate President Kennedy's missing brain.

A long-lost cache of Civil War gold may have been found; new evidence could point to the location of the stolen millions from the Plymouth Mail robbery; treasure hunters search for the legendary Lost Dutchman Mine.

Experts may have finally identified the strange creatures that besieged a Kentucky farmhouse; new evidence could explain the largest mass UFO sighting in U.S. history; investigators seek answers in Chicago's O'Hare International Airport sighting.

An alleged flying disc was seen by ground staff at the O'Hare International Airport in 2006; Craig and Sarah learn that witnesses refused to come forward due to fear of ridicule.

Craig and Sarah examine a UFO case reported from Pentyrch, South Wales in February 2016; they discuss recent footage and talk with investigators and a prominent eyewitness.

Craig and Sarah focus on UFO reports from the west coast of Ireland, notably an incident in 2018 when airline pilots experienced multiple sightings.

Blood-curdling curses.

A healer claims to cure diseases with prayer.

Lights above the Indian Ocean send a nation into panic.

Explore the myths and legends of ancient civilizations, from Lemuria and Atlantis to the mystery of the Etruscans and the Forgotten Kingdoms of Tibet.

The mysteries of modern science that confound the experts, including time travel, the dark web and the secrets of morphic fields.

Unsolved urban mysteries include a walrus skeleton found in a mass London grave, Moscow's secret Metro line and Prague's occult origins.

Individuals whose identities remain a mystery including D.B. Cooper, Jack the Ripper and the Man in the Iron Mask.

Classified military projects from false flag operations to America's recruitment of Nazi scientists after World War II.

Large unidentified objects appear over Kremlin and Pentagon.

Roswell's 1947 UFO crash sparked lasting debate and claims of alien cover-up, cementing its iconic status.

Strange three-fingered mummies discovered in Nazca raise questions of alien origin.

Documentarian Seth Breedlove and his crew head to the Adirondacks of upstate New York searching for Sasquatch; the crew visits Whitehall, NY, home to an incident involving multiple members of law enforcement claiming to see a Bigfoot.

A look at a series of metal cubes seen spinning in the sky over Earth; exploring the origin of an angel-shaped apparition; China's interest in aliens; a metal alloy that may power UFOs; scareships.

A mysterious doorway on Mars; victims of a UFO in the Amazon; an alien party crasher at the Queen's Jubilee in London; animal mutilations in France; a video of otherworldly visitors to Turkey.

Fending off a swarm of aggressive UFOs with a U.S. warship; an alien voice takes over a British TV broadcast; an Australian teacher who was threatened after a UFO sighting at school; exploring who the Men in Black really are.

Audio collected and experienced across the state of West Virginia is discussed.

In the American South, legends tell of a creature haunting the swamps - an ancient evil known as the Rougarou.

Follow the urban myth about a red-eyed creature seen as a harbinger of doom in the 1960s rural West Virginia.

On a September morning in 1994, students at a Zimbabwe school witness a silver craft land in a nearby field; numerous adults corroborate the UFO sighting, but the children are silenced; many maintain their account of the incident is true.

Lt. Ryan Graves and pilots in his squadron detect and engage with UFOs on multiple occasions; he gave a detailed description of regular encounters that flight teams had with a black box UFO they were seeing every day.

Triangle shaped hovering objects are seen by thousands of people and investigated by scientists and government officials, yet they could never be explained; the sightings occurred in a more than two year wave over Belgium, beginning in late 1989.

The expedition team shares first encounters and methods in their Sasquatch search in Shenandoah Valley.

Tyler Hall & Tyler Burgoyne investigate a sighting. A tense night search and follow-up reveal possible clues.

A look at the Pentagon's 2020 verification of UFO video footage taken by the U.S. Navy in 2004.

Craig and Sarah look at the 1980 Yorkshire case of Alan Godfrey who was allegedly abducted by a UFO; Godfrey underwent hypnosis in support of his claim; other prominent U.K. and U.S. abduction claims are featured and the experts discuss.

Craig and Sarah study the evidence available for the mass UFO sighting over Phoenix, Ariz. in 1997.

A seance appears to turn a housewife into a literary genius, as she channels a spirit to write a series of acclaimed books.

An explorer in Mexico finds a crystal skull he believes could open the way to another universe.

A grisly creature washes up on a Newfoundland beach.

Locations around the world with special religious significance from a Catalonian monastery to South Dakota's Black Hills.

Human sacrifice fueled by religious and cultural beliefs that include ritualistic burnings and bloodlettings.

A deep dive into people who vanished and were never found from a British secret agent to an intrepid explorer from a famous family.

Inventions that failed or were suppressed by the powers that be included Nikola Tesla's Wardenclyffe Tower and Stanley Meyer's water-powered fuel cell.

UFO crashes in 1945 and 1948 near Los Alamos suggest a link to nuclear activity.

Crop circles fascinate with their patterns and possible extraterrestrial origin.

Three alien abduction cases in the U.S. provide testimony and evidence.

Search Appalachia and the Smoky Mountains for Bigfoot.

Search Appalachia and the Smoky Mountains for Bigfoot.

A new kind of alien; picking apart an abduction case in the UK; learning why NASA is investigating UFOs after decades of denial; looking at time travel.

Sinister shapes hover over Chicago and Ruwa, Zimbabwe; an Australian is fighting for his life after taking a blast from a mysterious object; a UFO appears to taunt a U.S. military fighter jet over the Bermuda Triangle.

A pilot records a fleet of glowing UFOs over the South China Sea that appear and disappear; 12,000-year-old carvings at Karahan Tepe depict humanoids with mysterious features.

Deep in the darkened forests of West Virginia, a legend roams; tracked by investigators like Russ Jones, Bigfoot has long been primarily thought to roam the Pacific Northwest.

Beth Duncan experiences something strange on her property outside Wineberry, W.Va.; amongst the hills and hollers of the mountain state, a mystery unfolds that stretches the limits of what is known about Bigfoot.

A wave of werewolf sightings in western Pennsylvania draws Ward Hiney and skeptic Chad Christy to investigate.

In 1966, a slew of terrifying encounters and paranormal events bedeviled a rural community in West Virginia.

In 1980, a UFO detected on military radar, lands near crucial NATO bases; a group of military personnel claim to have seen a shiny metallic object with colored lights and hieroglyphic inscriptions.

Billy Meier claims he's traveled through time and space with an alien race from the Pleiades star cluster; in the decades following his revelation, both skeptics and ufologists say it's a hoax despite Meier providing photographic evidence.

A young recruit encounters aliens in the Nevada desert in the 1960s; he claims they were working with the US military and housed a spaceship in a secret hangar nearby.

Nathan Jenkins shares Bigfoot encounters and family history tied to Shenandoah legends.

The crew analyzes eerie audio with Devin Kouts, comparing it to known animal sounds.

The Stephenville UFO case from 2008.

In 2017, a strange object 800 meters long appears in the solar system; nicknamed 'Oumuamua, it acts in ways that cannot be scientifically explained.

Central Scotland has its very own Area 51, known as the Falkirk Triangle, encompassing the village of Bonnybridge, which claims the highest concentration of the region's UFO activity.

Tales of everyday objects that seem to be haunted by the dead, including a man who is attacked in his bed by an invisible phantom force following a devastating earthquake.

Researchers conduct a series of groundbreaking seances.

A California woman is plagued by an invisible attacker; a teen thinks she can see ghosts.

Cryptic artwork including a crucifixion statue with real teeth, Girl with a Pearl Earring and Leonardo da Vinci's Last Supper.

World War II left behind a number of unexplained events, such as the identity of Anne Frank's betrayer and the ultimate fate of Raoul Wallenberg.

Ten notable cases of information that were deemed unacceptable for public consumption include missing Biblical gospels and a baffling manuscript.

Time-honored but not always scientifically accepted, non-traditional healing methods including herbal remedies and regression therapy.

A secret alien-human collaboration in postwar Italy points to hidden encounters.

Teotihuacan, the City of the Gods, still hides mysteries about its origin, layout, and cosmic alignments.

Claims suggest secret space programs have sent humans to Mars.

The biggest breakthrough in the search for Sasquatch is found in Northern Washington.

Digging into a UFO crash caught on camera in Brazil; a close encounter of the Beatles kind; finding out if aliens shut down a nuclear missile launch site in Montana; looking at the shapes of UFOs and considering a link between ghosts and aliens.

Accounts of an amphibious UFO in Indonesia; a mass abduction in Australia; a slew of deaths in Wales after a strange sighting; searching for an alien library with an astronaut and meeting a scientist hunting for an interdimensional portal.

Taking a look at strange crafts flying over power plants, airports and the Royal Palace in Sweden, a veteran with supposed UFO-related health issues and footage shown at a US congressional hearing.

Creatures that are seemingly half-man and half-beast, including the tale of a bloodthirsty werewolf-like creature that appears on a country road in Wisconsin.

People who cheated death.

A skydiver survives a fall when her parachute fails; the possibility of spontaneous human combustion.

A doctor finds carvings that may indicate humans and dinosaurs coexisted.

An Arizona woman claims to have been fathered by an alien in a top-secret government experiment.

Blood-curdling curses.

A healer claims to cure diseases with prayer.

Lights above the Indian Ocean send a nation into panic.

A seance appears to turn a housewife into a literary genius, as she channels a spirit to write a series of acclaimed books.

An explorer in Mexico finds a crystal skull he believes could open the way to another universe.

A grisly creature washes up on a Newfoundland beach.

Tales of everyday objects that seem to be haunted by the dead, including a man who is attacked in his bed by an invisible phantom force following a devastating earthquake.

Researchers conduct a series of groundbreaking seances.

A California woman is plagued by an invisible attacker; a teen thinks she can see ghosts.

People who have vanished without a trace.

Stories about the supersensory power of animals, including a psychic octopus that correctly predicted multiple winners in sporting events.

A farmer discovers a mutilated cow; a Texas man claims he was abducted; an astronomer intercepts a mysterious message.

The predictive power of the subconscious; a man predicts a plane crash.

Medics at a California hospital fall gravely ill after treating a mysteriously ailing patient.

Rumbling volcano beneath Yellowstone National Park.

Creatures that are seemingly half-man and half-beast, including the tale of a bloodthirsty werewolf-like creature that appears on a country road in Wisconsin.

People who cheated death.

A skydiver survives a fall when her parachute fails; the possibility of spontaneous human combustion.

A doctor finds carvings that may indicate humans and dinosaurs coexisted.

An Arizona woman claims to have been fathered by an alien in a top-secret government experiment.

Blood-curdling curses.

A healer claims to cure diseases with prayer.

Lights above the Indian Ocean send a nation into panic.

A seance appears to turn a housewife into a literary genius, as she channels a spirit to write a series of acclaimed books.

An explorer in Mexico finds a crystal skull he believes could open the way to another universe.

A grisly creature washes up on a Newfoundland beach.

Tales of everyday objects that seem to be haunted by the dead, including a man who is attacked in his bed by an invisible phantom force following a devastating earthquake.

Researchers conduct a series of groundbreaking seances.

A California woman is plagued by an invisible attacker; a teen thinks she can see ghosts.

People who have vanished without a trace.

Stories about the supersensory power of animals, including a psychic octopus that correctly predicted multiple winners in sporting events.

A farmer discovers a mutilated cow; a Texas man claims he was abducted; an astronomer intercepts a mysterious message.

The predictive power of the subconscious; a man predicts a plane crash.

Medics at a California hospital fall gravely ill after treating a mysteriously ailing patient.

Rumbling volcano beneath Yellowstone National Park.

Creatures that are seemingly half-man and half-beast, including the tale of a bloodthirsty werewolf-like creature that appears on a country road in Wisconsin.

People who cheated death.

A skydiver survives a fall when her parachute fails; the possibility of spontaneous human combustion.

A doctor finds carvings that may indicate humans and dinosaurs coexisted.

An Arizona woman claims to have been fathered by an alien in a top-secret government experiment.

Blood-curdling curses.

A healer claims to cure diseases with prayer.

Lights above the Indian Ocean send a nation into panic.

A seance appears to turn a housewife into a literary genius, as she channels a spirit to write a series of acclaimed books.

Unsolved urban mysteries include a walrus skeleton found in a mass London grave, Moscow's secret Metro line and Prague's occult origins.

Searching for and discussing evidence of The Brown Mountain Lights with author Micah Hanks.

Searching for evidence in Area 51 of the cover-up of alien existence; while on their search, they learn of connections of conspiracy theories to UFO's.

An American Indian elder explains tribal beliefs regarding UFOs; New Hampshire residents recount an encounter with a strange craft.

From the Hudson Valley of upstate New York to the Sedona desert of Arizona, Shannon embarks on a trip to places around the US with a high number of UFO reports.

The crew broadens their search, exploring the wider Alaskan coastal rainforest.

The crew ventures into a dark valley across from camp, searching for signs of anything elusive.

A new theory is posed about what really happened to Charles Lindbergh's kidnapped son; experts may have finally solved one of Hollywood's biggest murder mysteries; a small Ohio town seeks answers to thousands of threatening letters.

Experts investigate the abduction of Betty and Barney Hill; new evidence surfaces about abductee Travis Walton; there may be an earthly explanation for the Mothman.

New theories about the Mantell UFO incident are revealed; scientific evidence may explain a UFO encounter in Texas; experts investigate what really crashed into a Canadian harbor.

In 1980, a UFO detected on military radar, lands near crucial NATO bases; a group of military personnel claim to have seen a shiny metallic object with colored lights and hieroglyphic inscriptions.

Billy Meier claims he's traveled through time and space with an alien race from the Pleiades star cluster; in the decades following his revelation, both skeptics and ufologists say it's a hoax despite Meier providing photographic evidence.

A young recruit encounters aliens in the Nevada desert in the 1960s; he claims they were working with the US military and housed a spaceship in a secret hangar nearby.

Investigating reports of UFOs massed over the South China Sea, ancient carvings of alienlike humanoids, and Albert Einstein's secret 1947 visit to Roswell, New Mexico.

A look at a series of metal cubes seen spinning in the sky over Earth; exploring the origin of an angel-shaped apparition; China's interest in aliens; a metal alloy that may power UFOs; scareships.

A mysterious doorway on Mars; victims of a UFO in the Amazon; an alien party crasher at the Queen's Jubilee in London; animal mutilations in France; a video of otherworldly visitors to Turkey.

Billy Meier's UFO photos and prophecies bring him fame and controversy.

Large unidentified objects appear over Kremlin and Pentagon.

Roswell's 1947 UFO crash sparked lasting debate and claims of alien cover-up, cementing its iconic status.

Follow the urban myth about a red-eyed creature seen as a harbinger of doom in the 1960s rural West Virginia.

Bart Cutino's Sierra Nevada expedition takes a turn when he's surrounded by Sasquatches overnight.