A young mother's idyllic Alaskan dream soon descends into a paranormal nightmare as she starts to suffer attacks by an unseen force; recent sightings may prove that a Native American legend about a mysterious race of giants is true.

An eyewitness shares startling video evidence of extraterrestrial activity in Fairbanks, Alaska; a UFO hunter flies over Alaska's highest mountain in search of a secret underground alien base.

A cryptozoologist hunts for scientific proof of Bigfoot in the remote Alaskan wilderness; experts investigate a mysterious vortex of energy that may be behind unexplained disappearances and paranormal activity in the Alaska Triangle.

Most waterways of Alaska are still unexplored; local folklore tells of hidden channels and monstrous beasts lurking in the depths; one of the most terrifying of all those beasts is said to live in Lake Iliamna.

Experts investigate whether an inter-dimensional portal in the Alaska Triangle led to the disappearance of an airplane carrying 44 military personnel in 1950.

Seasoned Bigfoot hunters investigate whether a huge, ape-like beast is responsible for a string of disappearances and mutilations in the remote Alaskan wilderness; new evidence suggests woolly mammoths may have found safe haven in Alaska.

A UFO hunter flies over Alaska's highest mountain in search of a secret underground alien base, and a mysterious energy vortex may be behind unexplained disappearances and paranormal activity in the Alaskan wilderness.

A cryptozoologist investigates reports of a sea monster lurking beneath the icy Alaskan waters, and an idyllic cabin in the woods becomes a paranormal nightmare for a young mother.

A vicious spirit attacks female guests at a historic hotel in Juneau, Alaska, and a paranormal investigator searches for answers to a mysterious shipwreck off the Alaskan coast.

Evidence suggests extraterrestrials may be beneath the ocean's surface; a famous UFO case occurs in the skies above Alaska when an unidentified flying object chases down a Japanese cargo plane.

Experts investigate whether an interdimensional portal led to the disappearance of an airplane in 1950, and an ape-like beast may be responsible for a string of disappearances and mutilations in the Alaskan wilderness.

In Travel Channel's "Destination Fear," documentary filmmaker Dakota Laden, his sister, Chelsea, and his best friend, Tanner Wiseman, travel across the country in an RV to spend nights in haunted locations. From asylums to prisons, they explore abandoned buildings using scientific equipment to capture evidence of paranormal activity. At each site, the luck of the draw determines where each one of them will sleep -- alone and separate from each other -- armed with cameras and dread as their only companions. Episodes include a visit to Brushy State Penitentiary, which is rumored to be rife with paranormal activity. At Old South Pittsburg Hospital, Dakota prepares sister Chelsea to confront a specter that attacks only women. In West Virginia, the team visits Sweet Springs Sanitarium, the site of a massacre of Native Americans, where they hear screams, voices and chants. They also revisit St. Albans Sanatorium, even though Chelsea has vowed she would never return to this awful place.

In "Ghost Adventures," Zak Bagans and his team of paranormal investigators have visited hundreds of haunted locations both in America and abroad, interviewing locals about alleged hauntings before going face to face with supernatural entities. Along the way, Zak and company have provided answers and help for couples, families and individuals suffering the vengeance of spirits. "Aftershocks" follows up by having the series' most memorable characters recount how things were before Zak's "lockdown" investigation and how their lives have changed since. Are questions still left unanswered? In some cases, paranormal teams that have investigated specific locations after the "Ghost Adventures" team bring their own evidence and insight to the table.

Paranormal investigators Jason Hawes, Steve Gonsalves and Dave Tango are back for all-new otherworldly adventures in Travel Channel's paranormal reality TV series, "Ghost Nation." The paranormal pioneers respond to urgent calls from local investigators who have reached dead ends while trying to help homeowners deal with high-stakes hauntings. Using state-of-the-art technology, the guys embed themselves in communities across the country to conduct multi-day investigations in an effort to track down the sources of these hauntings and restore peace to both the living and the dead.

"The Unexplained Files" investigates actual, inexplicable occurrences that have confounded scientists and inspired legends, from mysterious disappearances and UFO encounters, to unidentified fanged predators and reported curses. Besides never-before-seen footage, the series features scientists, government officials, journalists and eyewitnesses sharing vivid accounts of truly bewildering experiences. Episodes include investigations of bizarre creatures that prey on livestock in Texas, a centuries-old tome -- the Voynich Manuscript -- written in an unknown language, and Frederick Valentich, a pilot on a training flight who reported a strange craft hovering above him just minutes before he disappeared.

Families tormented by unusual activity in their homes -- with the added stress that the spirits may be their own late family members -- turn to two of America's leading paranormal investigators for help. Hesitant to leave their properties but seemingly out of all other options, the scared families meet with Amy Bruni and Adam Berry, and each episode of "Kindred Spirits" follows the fearless duo as they gather evidence, guide the spirits into the light, and restore peace to the home. Bruni and Berry got their start on Syfy's groundbreaking series "Ghost Hunters," which defined a new genre in supernatural storytelling on television.

Re-enactments of apparent collisions between the spirit plane and the real world are presented in each one-hour episode of "A Haunting," accompanied by commentary by the people who supposedly experienced such spooky incidents as demonic activity, poltergeist attacks, possessions, and cryptic visions. Paranormal investigators, priests, shamans, and psychic mediums provide insight into the stories as well.

People recount their paranormal experiences.

Paranormal investigator Zak Bagans leads his team of co-investigators at haunted locations both in America and abroad, interviewing locals about alleged hauntings before going face to face with supernatural entities. Each hourlong episode follows Bagans and his crew as they work to uncover the paranormal mysteries, and after piecing together the haunted history of each site, the team holds a dusk-to-dawn "lockdown" in an effort to obtain physical evidence of the paranormal and discover the truth.

When an earthquake unleashes dangerous paranormal forces, the beliefs and biases of humankind face a reckoning. Roman Mercer, a troubled medium and local pariah, must fight figurative and literal demons to stop a mass haunting in his remote Alaskan town of Port Moore. The prejudiced townsfolk stand in his way, unable or unwilling to see the threat -- at least, until the unexplainable and horrific incidents become too dire to overlook. Mercer's psychic abilities may prove to be the people's only salvation.

A homicide detective and a medium combine their sixth senses to investigate haunted locations where a deadly crime was committed. Steve DiSchiavi is a retired detective with more than 20 years of experience with the New York City Police Department, and Amy Allan is a paranormal researcher and psychic who has worked with many private investigators and police agencies. In each episode, the duo investigate a case independently and keep their findings hidden from each other to preserve the integrity of their discoveries. At the episode's end DiSchiavi and Allan share with the property owner what they discover, and it often points to an undeniable conclusion.