A Pennsylvania family is terrorized by a haunted doll; two friends witness a fleet of UFOs in the night sky; a man encounters the infamous Yowie in the Australian outback.

Friends test a local legend about a haunted bridge; a UFO is spotted from a plane window over California; a horrifying creature from the darkest corners of the internet is found in Oregon.

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.

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.

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 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 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 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.

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 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.

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.

A shadowy entity plays hide-and-seek in a graveyard; cryptic cries keep residents up at night; a vengeful spirit takes control of a car; a demonic doll torments a family.

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

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 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.

A Gollum-like creature is spotted in the Alps; a shadowy entity terrorizes a family in their home; a prehistoric predator goes on the attack; two UFOs put on a show.

A man opens a box from hell; friends track down a Bigfoot in the mountains; a sea creature stalks its prey; ghostly passengers disembark at an airport.

A woman gets a terrifying wake-up call; a ghost hunter becomes the hunted in an old cemetery; employees experience strange goings-on at a haunted dispensary; a poltergeist puts in overtime.

A compilation of altercations with the undead, including a physical attack by a graveyard ghost, living shadows in a basement and an unsettling stay at the world's most haunted hotel.

Morgan City, La., is experiencing a disconcerting spike in emergency calls related to encounters with ghosts from the bayou city's turbulent past. Police Chief James Blair calls upon a team of paranormal experts to investigate the city's rise in bizarre activity. The team is led by Lousiana native Jereme Leonard, former FBI agent Ben Hansen and psychic medium Sarah Lemos. With the help of local historian Diane Wiltz, the team digs into the area's haunted history and begins the crossing-over process for some of the spirits wreaking havoc on the small community. Learning that the hauntings have spread throughout the area, the team begins working with other police departments to get to the bottom of the ghostly infestation of St. Mary Parish.

TV personality/executive producer Jack Osbourne teams with paranormal investigator Katrina Weidman on journeys to notorious haunted locations. Not only do these places have dark histories, but they are especially sinister and purported to be doorways to the spirit underworld. Each hourlong episode finds Osbourne and Weidman at a different site, examining unusual incidents while utilizing specialized technology and a network of experts to help document and uncover the truth. Among others, the investigations include Bobby Mackey's Music World in Kentucky, Eastern State Penitentiary in Pennsylvania, the Alaskan Hotel in Juneau, Ohio's Twin City Opera House, and New Orleans' infamous LaLaurie Mansion -- where Jack and Katrina become the only paranormal team to ever examine the disturbing hauntings within its walls.

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.

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.

The last thing first responders expect to experience on an emergency call is a paranormal encounter. But it's not as unusual as one might think. Each year an alarming number of 911 responders are forced to face their fears as they put themselves in danger to help the living. This first-person, drama/documentary presents terrifying true tales of such encounters, brought to life via reenactments and the perspectives of police officers, firefighters and paramedics who arrive on scene, then find themselves witnessing supernatural phenomena.

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.