A home security camera captures a dog's scary encounter with a ghost; a strange creature is spotted deep within a cave in the Alps; people all over the globe witness UFOs during the daytime.

Poltergeist activity is caught on an Irish school's security camera; two Russians encounter what may be a Sasquatch while driving in Siberia; a UFO is spotted flying over Australia in broad daylight.

Friends in Utah track down a Bigfoot spotted in the mountains; a total skeptic is attacked by a spirit at a haunted fort in England; ghostly passengers appear in a Hong Kong airport.

A traveling businessman encounters poltergeist activity in his Texas motel room; a UFO is spotted over one of the holiest sites on Earth; a Sasquatch is spotted by two hikers in British Columbia.

A couple learns they're sharing their hotel room with a ghostly guest in Arkansas; a strange formation floats over a Philadelphia neighborhood; a monstrous creature washes up on a beach in the Philippines.

A couple encounters a sea monster while boating off the Florida coast; a man's house becomes haunted after he opens a cursed box; a god-like figure walks across clouds in the sky in Alabama.

A famous monster washes up on a New York beach; parents catch ghosts haunting nurseries on baby monitors; a UFO saves a Russian town.

A ghost appears on the Gettysburg battlefield; a sea monster surfaces in Ireland; fleets of UFOs are spotted over the skies of Philadelphia and The Hague.

A paranormal investigator is attacked by an entity in an abandoned asylum in Connecticut; a driver witnesses a strange UFO over a hotel in North Carolina; an Oregon marijuana dispensary is haunted by ghosts of the past.

Ghostly patrons haunt pubs throughout the United Kingdom; a shadow creature stalks a police officer on an empty plane in Mexico City; a sea monster is spotted by multiple witnesses on the Thames.

A pyramid-shaped UFO is spotted over the Pentagon; a man and his children are spooked by a ghost on a Rhode Island playground; a security camera captures strange creatures stalking a California neighborhood.

The creepiest, craziest and most chilling encounters with aggressive ghosts ever caught on camera, including an attack at an abandoned asylum, a violent spirit in the Tennessee woods and a petrifying poltergeist in England.

An Oregon man captures some of the best bigfoot footage ever; UFOs cluster over a Texas town; a Wales resident faces an especially active poltergeist.

A poltergeist haunts an English antique store; a man and his son encounter bigfoot in Washington; a strange UFO is spotted over Inner Mongolia.

Experts analyze footage from paranormal videos; specialists provide insights, while eyewitnesses give firsthand accounts of strange phenomena.

A Pennsylvania family is terrorized by a shadowy entity; a brazen Bigfoot appears in front of a large group of shocked witnesses in Oregon; two UFOs put on a show in the skies above Bath, England.

You may not want to watch "Paranormal Witness" alone if you're easily spooked. This series brings to life -- through the use of first-hand testimony, home videos and personal photos -- the stories of people who have lived through paranormal experiences. In addition to featuring the usual paranormal stuff -- UFO sightings, poltergeists, haunted mansions, to name just a few -- "Paranormal Witness" episodes also tell the stories of a child with an imaginary friend and a highway that is said to be haunted.

People often think that ghosts and other spirits live in and "haunt" buildings. But people don't usually think the same thing about objects like paintings, jewelry and dolls. But the Zaffis family, led by dad John, not only thinks that ghosts can inhabit such objects, they collect what they think are paranormal objects. John Zaffis is a paranormal investigator who has been asked to consult on hauntings for nearly four decades. Through the years, he has amassed thousands of possessed objects that he keeps in his bizarre museum, where visitors report feeling an evil presence upon entering the building. Assisting John on his investigations are his children, Chris and Aimee. Also along for the (potentially scary) ride are tech specialist Brian Cano, who has been fascinated by the paranormal since he was young, and an additional psychic investigator or two.

People will spend money for an admission ticket to walk through a haunted house attraction, but would those people embrace the idea of a haunted house if the scary domicile was their own? "My Haunted House" tells of owners who say their homes have ghosts. Interviews with those who have experienced paranormal activity -- coupled with dramatic re-enactments -- bring the spooky stories to life in each of the hourlong episodes, which include two stories of such cohabitation with spirits.

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.

The producers of Destination America's popular "Paranormal Survivor" bring together North America's leading ghost hunters and mediums to recount their most riveting supernatural experiences. Each episode of "Haunted Case Files" features a story from three different paranormal investigation groups, retold through interviews, actual recordings of the evidence that was captured, and dramatic re-enactments of the events that unfolded.

Lots of people have a ghost story, but how many have a video recording to back it up? "My Ghost Story: Caught on Camera" features true and astonishing stories of the paranormal told by people who lived through them -- and the stories are supported by visual proof of their hauntings. From dark apparitions to violent poltergeists, these harrowing eyewitness accounts of the unexplainable are transformed into more than just tales. With visual evidence, viewers have no choice but to believe what they see.

Australia may be in the Southern Hemisphere, but that doesn't make it immune to suspected paranormal activity. In "Haunting: Australia," six of the best ghost hunters in the industry head to the island continent in search of proof that there are ghosts there. The team -- led by former "Ghost Hunters International" star Robb Demarest -- visits some of Australia's most haunted locations to uncover ghostly evidence. The other members of the experienced group include ordained exorcist Ian Lawman, Indian Paranormal Society founder Gaurav Tiwari, former radio host Ray Jorden, celebrity psychic Rayleen Kable and paranormal blogger Allen Tiller.