Follows investigators across Australia as they battle the clock to find lost loved ones.

The inside story of an operation to hack global crime gangs' encrypted phone network.

A down-and-out waitress questions her choices.

A lonely teen encounters an unwelcome guest.

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.

A man discovers he is not alone while livestreaming a video game; a shadow creature stalks a police officer on an empty plane; a UFO gets dangerously close to two commercial jets; a ghostly legend shows itself in England.

The demons and failed hopes that led gentle giant Greg to follow in his father's footsteps; his mother's and sister's pain as they try to show Greg that his musical dreams are worth kicking his life-threatening fentanyl-and-meth habit.

Meeting anxious souls whose lives were taken too soon; visiting a Ky. cinema filled with the spirits of children who died in a fire; chasing a ghostly girl in an Ontario antique shop; shivering as a departed child cries in a woman's Utah dream home.

A young family's dream home turns into a nightmare when they're terrorized by the ghost of a haggard old woman; a man discovers he's not alone after encountering an unnerving black mist and the spirit of little boy in his apartment.

Taking a look at the case of Sharee, who constantly lied to hide her spending sprees and raunchy online exchanges from her husband. The homemaker manipulated an ex-cop into believing she was being abused before a murder tore their lives apart.

Paid programming.

Ryan and his team help a woman and her grandson, who have encountered a former tenant named Alfred.

When paramedic Stacy arrives at a suicide scene, she encounters an oppressive presence; paramedic Chris hears footsteps in an empty building in a school; paramedic Patrick comes across a grim reaper at an old hospital.

Krystal lives out her dream of getting married and dedicating her life to two young sons, but the effects of growing up in a dysfunctional family, along with the death of her father, turn Krystal into an alcohol, heroin, meth and fentanyl addict.

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.

Ghost hunters spend the night with an evil spirit; playgrounds for the dead; colossal creature appears near the shore of an Irish lake.

Dr. Small's tragic death is her husband's work.

The triple trauma that made Danielle turn to drugs to relieve her pain; her life on the streets, hustling for her next fix, and seeing if the love of her five children is enough to push her to get the help she desperately needs.

Liam describes the overbearing ghost boy that terrified him for years in his family's farmhouse; investigate this strange apparition with Danny, who uncovers generations' worth of hushed-up sightings by Liam's family and friends.

Luton Police Station uses fixed rig and handheld cameras to provide insight into the day-to-day challenges faced by staff and officers.

Ghost hunters spend the night with an evil spirit; playgrounds for the dead; colossal creature appears near the shore of an Irish lake.

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.

Courtney's family stages an intervention in a desperate attempt to save her from her drug addiction.

Strange objects caught on a drone cam over Wisconsin; a strange sound recorded in a North Carolina backyard; several airplanes appearing to defy the laws of physics.

A flying object caught on U.S. government cameras; a strange sound traveling through 5,000 miles of ocean; the sighting of an apparent ghost ship floating in Lake Superior.

In response to a call to storm Area 51, ufologist Ryan Sprague joins Jennifer Marshall to investigate what sparked the viral movement and what may be hidden inside Area 51.

Courtney's family stages an intervention in a desperate attempt to save her from her drug addiction.

Strange objects caught on a drone cam over Wisconsin; a strange sound recorded in a North Carolina backyard; several airplanes appearing to defy the laws of physics.

A flying object caught on U.S. government cameras; a strange sound traveling through 5,000 miles of ocean; the sighting of an apparent ghost ship floating in Lake Superior.

In response to a call to storm Area 51, ufologist Ryan Sprague joins Jennifer Marshall to investigate what sparked the viral movement and what may be hidden inside Area 51.

A neglected daughter yearns for another life.

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.

Ghost hunters spend the night with an evil spirit; playgrounds for the dead; colossal creature appears near the shore of an Irish lake.

The triple trauma that made Danielle turn to drugs to relieve her pain; her life on the streets, hustling for her next fix, and seeing if the love of her five children is enough to push her to get the help she desperately needs.

Jack Kenna discovers a family secret in a historic house in Massachusetts; a young teenager gets attacked in her sleep; a client faces life-threatening danger in Kansas.

Buccaneers who ran a South Carolina port in the golden age of piracy are summoned; the truth about a ghost ship and a creepy bedroom in the city's oldest tavern is uncovered; a spirit stalking one of the investigators is confronted.

A silent, orange football-shaped object is spotted over Loring Air Force Base in Maine; a Swedish farmer witnesses a crash into a lake.

A man observes a saucer-shaped object in a lagoon; an unusual light in a field causes the driver to veer off the road.

These are the witnesses that have been literally touched by the unknown; physical contact events that take the shape of nightmares, complete with alien examinations and inexplicable metal implants discovered inside human bodies.

Courtney's family stages an intervention in a desperate attempt to save her from her drug addiction.

Growing up, Peter excelled in everything he did, but the pressure of being perfect, coupled with a secret childhood trauma led Peter to fentanyl, and now he's smoking 1,000 times the lethal dose every day.

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.

A man stands in awe as he watches mysterious creatures fly over Chicago; a group of teens pay the price when they travel down a notoriously haunted road in New Jersey; ghost hunters explore an abandoned church that has a powerful demonic presence.

Delving into the stories of killers who broke the Hippocratic Oath to use their medical knowledge for murder, taking the lives of often vulnerable victims instead of caring for them.

Why Tristan hid his identity struggles and the abuse he witnessed at home by playing the part of the golden child; how a sexual assault led him to spiral into alcoholism, destroying his liver and leaving his family afraid for his life.

In response to a call to storm Area 51, ufologist Ryan Sprague joins Jennifer Marshall to investigate what sparked the viral movement and what may be hidden inside Area 51.

Strange objects caught on a drone cam over Wisconsin; a strange sound recorded in a North Carolina backyard; several airplanes appearing to defy the laws of physics.

A flying object caught on U.S. government cameras; a strange sound traveling through 5,000 miles of ocean; the sighting of an apparent ghost ship floating in Lake Superior.

A man stands in awe as he watches mysterious creatures fly over Chicago; a group of teens pay the price when they travel down a notoriously haunted road in New Jersey; ghost hunters explore an abandoned church that has a powerful demonic presence.

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.

Buccaneers who ran a South Carolina port in the golden age of piracy are summoned; the truth about a ghost ship and a creepy bedroom in the city's oldest tavern is uncovered; a spirit stalking one of the investigators is confronted.

Discovering evil beings that hide in the shadows, waiting for a chance to pounce; eeing why a Pennsylvania well is a gateway to terror; crossing paths with an otherworldly stalker in Georgia; exorcise a dark spirit in a South Carolina family home.

Dracula, Lycaon of Arcadia, the Beast of Gévaudan; these are the names of grotesque monsters who have reared their terrifying heads throughout history, unearthly creatures that thrived on human blood and flesh.

Buccaneers who ran a South Carolina port in the golden age of piracy are summoned; the truth about a ghost ship and a creepy bedroom in the city's oldest tavern is uncovered; a spirit stalking one of the investigators is confronted.

A golden-eyed priestess sparks myths of mystical powers and deep-rooted local folklore.

Dracula, Lycaon of Arcadia, the Beast of Gévaudan; these are the names of grotesque monsters who have reared their terrifying heads throughout history, unearthly creatures that thrived on human blood and flesh.

A wealthy CEO suffers for his sins.

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.

A man stands in awe as he watches mysterious creatures fly over Chicago; a group of teens pay the price when they travel down a notoriously haunted road in New Jersey; ghost hunters explore an abandoned church that has a powerful demonic presence.

Why Tristan hid his identity struggles and the abuse he witnessed at home by playing the part of the golden child; how a sexual assault led him to spiral into alcoholism, destroying his liver and leaving his family afraid for his life.

A couple unleashes something terrifying while renovating a classic car; a pair of murderous spirits possess a family in Pennsylvania; something demonic takes over a teenage boy, forcing his parents to take drastic action.

A golden-eyed priestess sparks myths of mystical powers and deep-rooted local folklore.

When paramedic Stacy arrives at a suicide scene, she encounters an oppressive presence; paramedic Chris hears footsteps in an empty building in a school; paramedic Patrick comes across a grim reaper at an old hospital.

Taking a look at the case of Sharee, who constantly lied to hide her spending sprees and raunchy online exchanges from her husband. The homemaker manipulated an ex-cop into believing she was being abused before a murder tore their lives apart.

Psychic energy gathers when there is a life-or-death crisis; touring a psychiatric hospital that has a reputation for being haunted, a nurse describes the spirits she sees walking the halls.

Claudia is a Mexican-American woman pursuing the American dream as she attends university; when her grandmother dies, the dark shadow she has been seeing since she was a child suddenly begins to attack her and isolate her from her friends.

Learning why stone, metal, and water attract paranormal forces; examining a limestone mansion in Ind. that's tied to the spirit world; following the path of Ohio's soul-attracting rivers; spotting the inexplicable in a Va. inn atop a former mine.

The team investigates the home of "Geordie Shore" star Marnie Simpson in Flitwick, Bedfordshire; Marnie is convinced that she's haunted by something that followed her home.

The team travels to Albion, N.Y., to help a home renovator whose dream project has become a nightmare; a tale of warring wives and tragic death on the property has Grant and the team believing the home may be haunted by one of its former matriarchs.

Dracula, Lycaon of Arcadia, the Beast of Gévaudan; these are the names of grotesque monsters who have reared their terrifying heads throughout history, unearthly creatures that thrived on human blood and flesh.

Luton Police Station uses fixed rig and handheld cameras to provide insight into the day-to-day challenges faced by staff and officers.

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.

Kelly and Steve team up with the Anderson County Sheriff's Office to solve the horrific quadruple homicide of a family on Halloween; their investigation reveals a family feud, a trail of stolen cash, and a bloody shoe print left by the killer.

Follows investigators across Australia as they battle the clock to find lost loved ones.

Luton Police Station uses fixed rig and handheld cameras to provide insight into the day-to-day challenges faced by staff and officers.

The "Cold Justice" team and the Anderson County Sheriff's Office continue their investigation into the quadruple homicide of a family of four in an attempt to finally give answers and justice to their grieving family and community.

The inside story of a huge operation by the UK's National Crime Agency to hack global crime gangs' encrypted phone network, used by thousands of criminals to organize smuggling, murder and more.

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 silent, orange football-shaped object is spotted over Loring Air Force Base in Maine; a Swedish farmer witnesses a crash into a lake.

A man observes a saucer-shaped object in a lagoon; an unusual light in a field causes the driver to veer off the road.

Buccaneers who ran a South Carolina port in the golden age of piracy are summoned; the truth about a ghost ship and a creepy bedroom in the city's oldest tavern is uncovered; a spirit stalking one of the investigators is confronted.

At Delmenhorst Hospital, Germany, administrators notice death rates in their intensive care unit have risen; suspicions fall on Nurse Niels Hogel who turns out to be Germany's most prolific murderer since WW2.

A golden-eyed priestess sparks myths of mystical powers and deep-rooted local folklore.

The team travels to Albion, N.Y., to help a home renovator whose dream project has become a nightmare; a tale of warring wives and tragic death on the property has Grant and the team believing the home may be haunted by one of its former matriarchs.

The "Cold Justice" team and the Anderson County Sheriff's Office continue their investigation into the quadruple homicide of a family of four in an attempt to finally give answers and justice to their grieving family and community.

Buccaneers who ran a South Carolina port in the golden age of piracy are summoned; the truth about a ghost ship and a creepy bedroom in the city's oldest tavern is uncovered; a spirit stalking one of the investigators is confronted.

A silent, orange football-shaped object is spotted over Loring Air Force Base in Maine; a Swedish farmer witnesses a crash into a lake.

A man observes a saucer-shaped object in a lagoon; an unusual light in a field causes the driver to veer off the road.

Meeting anxious souls whose lives were taken too soon; visiting a Ky. cinema filled with the spirits of children who died in a fire; chasing a ghostly girl in an Ontario antique shop; shivering as a departed child cries in a woman's Utah dream home.

A golden-eyed priestess sparks myths of mystical powers and deep-rooted local folklore.

A couple unleashes something terrifying while renovating a classic car; a pair of murderous spirits possess a family in Pennsylvania; something demonic takes over a teenage boy, forcing his parents to take drastic action.

A police officer chases a ghostly intruder around a nursing home; a man's spirit watches out for his baby from the other side after a deadly car crash; a first responder receives an extremely cold slap in the face from an unseen entity.

Experts investigate claims of extraordinary paranormal activity at the White House and question whether 1600 Pennsylvania Avenue is cursed.

Alison and Mike receive some exciting news about their guesthouse business, but the fallout soon sees tensions running high between the pair as they struggle to deal with particularly demanding guests.

Follows investigators across Australia as they battle the clock to find lost loved ones.

A face-off with an angry demon who scratches a Canadian couple exploring a haunted mansion; meeting a pushy pub poltergeist in the UK; seeing strange footage captured by an Australian man who swears that a ghost has been walking his beloved pooch.

Kelly and Steve team up with the Anderson County Sheriff's Office to solve the horrific quadruple homicide of a family on Halloween; their investigation reveals a family feud, a trail of stolen cash, and a bloody shoe print left by the killer.

Follows investigators across Australia as they battle the clock to find lost loved ones.

A golden-eyed priestess sparks myths of mystical powers and deep-rooted local folklore.

Every day, all around the world, in the most ordinary places, regular people are spotting UFOs; these witnesses will never see the night sky the same way, ever again.

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 golden-eyed priestess sparks myths of mystical powers and deep-rooted local folklore.

A river raft guide spots an infamous cryptid along the Colorado River; a UK man taking out his trash appears to pick up a ghostly hitchhiker; a Las Vegas couple manifests a bright light in the sky while stargazing in their backyard.

Alison and Mike receive some exciting news about their guesthouse business, but the fallout soon sees tensions running high between the pair as they struggle to deal with particularly demanding guests.

Experts investigate claims of extraordinary paranormal activity at the White House and question whether 1600 Pennsylvania Avenue is cursed.

The team investigates the home of "Geordie Shore" star Marnie Simpson in Flitwick, Bedfordshire; Marnie is convinced that she's haunted by something that followed her home.

A river raft guide spots an infamous cryptid along the Colorado River; a UK man taking out his trash appears to pick up a ghostly hitchhiker; a Las Vegas couple manifests a bright light in the sky while stargazing in their backyard.

Alison and Mike receive some exciting news about their guesthouse business, but the fallout soon sees tensions running high between the pair as they struggle to deal with particularly demanding guests.

Experts investigate claims of extraordinary paranormal activity at the White House and question whether 1600 Pennsylvania Avenue is cursed.

Luton Police Station uses fixed rig and handheld cameras to provide insight into the day-to-day challenges faced by staff and officers.

Follows investigators across Australia as they battle the clock to find lost loved ones.

Experts investigate claims of extraordinary paranormal activity at the White House and question whether 1600 Pennsylvania Avenue is cursed.

Alison and Mike receive some exciting news about their guesthouse business, but the fallout soon sees tensions running high between the pair as they struggle to deal with particularly demanding guests.

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.

Ursula investigates one of Chicago's most haunted places; hunters come face-to-face with a terrifying entity in a Utah hospital; Joe battles a powerful animal spirit summoned by dark satanic rituals.

Exploring towns where tragedy has opened the door to another world; feeling unsettling energy in a Mo., secret society building; seeing an innocent game turn supernatural near Philly; stepping into a Ga., B & B where scary spirits check in nonstop.

A group recalls their experience with a ghost doctor and screaming sounds in an abandoned psychiatric hospital.

A young man seeks a fresh start; Death has other plans.

Lorraine Warren and the team try to help a woman stop her obsession with taping voices of the dead every night.

Paid programming.

The haunting memory of childhood molestation causes a tae kwon do prodigy to turn to the numbing effects of drugs at the age of 15; six years later, the former athlete is deeply addicted to crack cocaine and IV opioids.

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.

UFOs hover over government property in Hawaii; the spirit of a little boy in a haunted cave; a crucifix moves on its own.

Nurse Genene Jones is believed to have killed as many as sixty children in her care by injecting them with muscle relaxants and other drugs; one bereaved mother leads the charge to bring her to justice.

The cascade of trauma and toxic relationships that turned former teen beauty queen Jessica into a severely addicted dealer.

A river raft guide spots an infamous cryptid along the Colorado River; a UK man taking out his trash appears to pick up a ghostly hitchhiker; a Las Vegas couple manifests a bright light in the sky while stargazing in their backyard.

Experts investigate why a Los Angeles hotel has become a magnet for death and if an ominous flight number associated with multiple aviation disasters is cursed.

The ghosts treat Alison to a wonderfully festive Christmas present and Pat faces his past.

UFOs hover over government property in Hawaii; the spirit of a little boy in a haunted cave; a crucifix moves on its own.

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.

Kelly shares exclusive updates on past cases, answers most asked questions, and catches up with family members and fan-favorite cops.

Luton Police Station uses fixed rig and handheld cameras to provide insight into the day-to-day challenges faced by staff and officers.

Follows police investigators and forensic specialists across Australia as they battle the clock to find lost loved ones and bring them home.

Kelly shares exclusive updates on past cases, answers most asked questions, and catches up with family members and fan-favorite cops.

Luton Police Station uses fixed rig and handheld cameras to provide insight into the day-to-day challenges faced by staff and officers.

Follows police investigators and forensic specialists across Australia as they battle the clock to find lost loved ones and bring them home.

A grieving couple struggle with saying goodbye.

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.

UFOs hover over government property in Hawaii; the spirit of a little boy in a haunted cave; a crucifix moves on its own.

The cascade of trauma and toxic relationships that turned former teen beauty queen Jessica into a severely addicted dealer.

Deborah and Jay both come from families that see spirits, and both have had ghostly encounters of their own.

A friendly ghost influences Stephen to end his marriage, while a malicious ghost makes Chris decide to move.

A policeman discovers an oval-shaped object without windows or doors; a woman spots an aura of light surrounding a small tree.

A 10,000-gallon water tank is found to be empty after an object is spotted hovering over it; amaranth plants wilt after a saucer-shaped craft hovers above them.

Every day, all around the world, in the most ordinary places, regular people are spotting UFOs; these witnesses will never see the night sky the same way, ever again.

Peek at landmarks in places where they shouldn't be; wing your way over an imperial pyramid in the Netherlands, a metal sphere in remote Russia, a lion shape carved into an English hillside and a bare swath cut through an Austrian forest.

Katrina and Heather work on a case in which a Prohibition-era ghost haunts a bar.

Paid programming.

Raised in Northern California, Kenny excelled in football and had big dreams of playing in the NFL, but a misstep in high school triggered a series of events that left him homeless and addicted to dangerous amounts of fentanyl.

Two friends summon a ghost using six spirit boards; a school in Ireland becomes a paranormal playground after-hours; a young man can't contain himself when he is treated for a voodoo curse.

A tourist captures startling footage of a giant sea serpent in Alaska, an unsuspecting ghost hunter is assaulted by a vengeful spirit and a bipedal beast roams the hills alongside a California highway.

Nicknamed Dr Death, neurosurgeon Christopher Duntsch destroys the lives of many who end up in his operating theater; in two cases it results in death.

Cody and Erin's dependence on drugs and each other has derailed their lives.

Kelly shares exclusive updates on past cases, answers most asked questions, and catches up with family members and fan-favorite cops.

Follows police investigators and forensic specialists across Australia as they battle the clock to find lost loved ones and bring them home.

A tourist captures startling footage of a giant sea serpent in Alaska, an unsuspecting ghost hunter is assaulted by a vengeful spirit and a bipedal beast roams the hills alongside a California highway.

Two friends summon a ghost using six spirit boards; a school in Ireland becomes a paranormal playground after-hours; a young man can't contain himself when he is treated for a voodoo curse.

Probing the Windsor Hum and Old Faithful; visiting a Venezuelan lake where lightning rains down 300 nights a year; sizing up the massive underground fire that's been burning in Centralia, Pa., since 1962.

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

The fate of Pharaoh Ramses III has long been clouded by rumors of a family plot against him; scientists examine the tomb, uncovering evidence that supports these ancient suspicions.

Probing the Windsor Hum and Old Faithful; visiting a Venezuelan lake where lightning rains down 300 nights a year; sizing up the massive underground fire that's been burning in Centralia, Pa., since 1962.

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

The fate of Pharaoh Ramses III has long been clouded by rumors of a family plot against him; scientists examine the tomb, uncovering evidence that supports these ancient suspicions.

A down-and-out waitress questions her choices.

Two friends summon a ghost using six spirit boards; a school in Ireland becomes a paranormal playground after-hours; a young man can't contain himself when he is treated for a voodoo curse.

A tourist captures startling footage of a giant sea serpent in Alaska, an unsuspecting ghost hunter is assaulted by a vengeful spirit and a bipedal beast roams the hills alongside a California highway.

Cody and Erin's dependence on drugs and each other has derailed their lives.

Marie Yates is convinced that the death of her grandmother was the work of an evil spirit; investigator George Acosta believes the only cure for a woman with a mysterious illness is an exorcism; investigators explore an old jail.

Showcases a search for the phantom child who is asking a resident and a care assistant for help; learning how a late patient got the last word; listening to the spirit that rings call bells and cries out to a nurse's aide.

The team investigates paranormal activity linked to an overwhelming number of natural disasters, contacts spirits in a hotel built atop a hospital, explores an eerie B & B, and finds troubled souls in America's most haunted city.

PRS travels to Massachusetts to investigate an old schoolhouse believed to be haunted by children's voices.

The Paranormal Research Society helps a single mother experiencing activity in a home that was once the site of brutal murders.

The paranormal leaves its mark, figuratively and literally, on innocent victims; a brother and sister encounter a malicious entity in the basement; a hostile spirit terrorizes a young boy; and an antique portrait causes turmoil in a family's home.

When Christine's brother died in a tragic accident, she turned to methamphetamine and her seemingly perfect family spiraled out of control; interventionists Ken Seeley and Sylvia Parsons team up on the biggest case of their careers.

A poltergeist turns an evening of pet-sitting into a night of survival; a household struggles to accept a ghostly new member of the family; a woman catches a spirit watching her little boy.

A Florida man encounters an elusive Sasquatch; ghost hunters attempt to contact the spirit of a murder victim in Tennessee; a Las Vegas resident captures incredible footage of UFOs soaring through the skies.

A man is found dead at home after a fire, but everything is not as it seems; his death was caused by something else, something of which a nurse, like his wife, would have considerable knowledge.

Jeff discusses how separation from his biological father and years of bullying fuelled his escalating drug use; the family of this promising auto body technician tries to intervene before crack cocaine crashes his career and life.

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

Probing the Windsor Hum and Old Faithful; visiting a Venezuelan lake where lightning rains down 300 nights a year; sizing up the massive underground fire that's been burning in Centralia, Pa., since 1962.

A Florida man encounters an elusive Sasquatch; ghost hunters attempt to contact the spirit of a murder victim in Tennessee; a Las Vegas resident captures incredible footage of UFOs soaring through the skies.

A poltergeist turns an evening of pet-sitting into a night of survival; a household struggles to accept a ghostly new member of the family; a woman catches a spirit watching her little boy.

Follows investigators across Australia as they battle the clock to find lost loved ones.

Reconstruct the details of Micki's final hours on her romance-rekindling cruise with ex Lonnie. See why his calm demeanour and quick escape raises red flags for investigators, who soon find a web of financing.

Kelly and Steve look into the 2007 murder of a single father who was gunned down by a sharpshooter with a high-powered rifle; state-of-the-art digital forensics may help poke a hole in the suspect's alibi.

Follows investigators across Australia as they battle the clock to find lost loved ones.

Reconstruct the details of Micki's final hours on her romance-rekindling cruise with ex Lonnie. See why his calm demeanour and quick escape raises red flags for investigators, who soon find a web of financing.

Maurice becomes annoyed when Guy enlists the services of a medium; information is revealed about the nature of the dark entity.

A New Orleans socialite wrestles with her past.

A poltergeist turns an evening of pet-sitting into a night of survival; a household struggles to accept a ghostly new member of the family; a woman catches a spirit watching her little boy.

A Florida man encounters an elusive Sasquatch; ghost hunters attempt to contact the spirit of a murder victim in Tennessee; a Las Vegas resident captures incredible footage of UFOs soaring through the skies.

Jeff discusses how separation from his biological father and years of bullying fuelled his escalating drug use; the family of this promising auto body technician tries to intervene before crack cocaine crashes his career and life.

Investigating dark echoes of the past that remain long after an individual has died; looking inside a haunted home on the Atlantic coast, a spirit-filled former asylum in Missouri; a Victorian house in Ontario that's occupied by a phantom.

A group recalls their experience with a ghost doctor and screaming sounds in an abandoned psychiatric hospital.

Brett Ryan paves a long road of deception. The serial-lying ex-con hides his bank-robbing past from his fiancé and misleads his family, before a late-night confession to his mother leads to a murder no one could have seen coming.

Paid programming.

Ryan assembles his top investigators in preparation for facing the demon that has been following him.

An emergency technician responds to a call in a home that contains a collection of mannequins; a first responder hears the voice of a dead woman; a police officer investigates strange goings-on in an elderly woman's attic.

Despite multiple overdoses and medical emergencies, Christine and her three adult children continue to use dangerous amounts of fentanyl together in their single studio apartment in Garden Grove, Calif.

A man's supernatural experiences in a hotel don't stop there; two women witness the spirit of a little boy playing a trick on them; a man makes the biggest mistake of his life when he opens a cursed box.

Paranormal investigators get a chilling response from a dearly departed rock legend; a ghostly canine joins its former owner for a nighttime stroll; a man and his co-workers spot a gaggle of UFOs in the Louisiana bayou.

A serial-killing Canadian nurse walks into a police station of her own free will and confesses to a murderous rampage; her detailed recounting of each death is chilling.

Melissa's cocaine and vodka-fuelled rages has her family living in fear; a sexual assault experience has pushed Melissa into a cycle of addiction and underage prostitution that is threatening to end her life before she turns 20.

Facing a destructive spirit that has been menacing charity shop manager Sybil and her co-workers; dig in with Danny, who discovers a hidden room, clues about this entity's identity and possible links to something called the "stone tape theory.".

Luton Police Station uses fixed rig and handheld cameras to provide insight into the day-to-day challenges faced by staff and officers.

Paranormal investigators get a chilling response from a dearly departed rock legend; a ghostly canine joins its former owner for a nighttime stroll; a man and his co-workers spot a gaggle of UFOs in the Louisiana bayou.

A man's supernatural experiences in a hotel don't stop there; two women witness the spirit of a little boy playing a trick on them; a man makes the biggest mistake of his life when he opens a cursed box.

After tragedies and struggles, Coleman's family believes his addiction to drugs will kill him before he's able to see his daughter again.

Examining whether centuries-old photos are proof that reincarnation is actually occurring; whether nuclear waste off the coast of Russia could be creating an army of mutant fish; secret government space weapons.

A strange footprint and a foul smell; a mysterious cluster of mounds on the moon; a whisper heard in the desert that resembles an ancient pharaoh's curse.

Jennifer and Jordan investigate claims that a vortex for supernatural forces is causing ships and planes to vanish without a trace.

After tragedies and struggles, Coleman's family believes his addiction to drugs will kill him before he's able to see his daughter again.

Examining whether centuries-old photos are proof that reincarnation is actually occurring; whether nuclear waste off the coast of Russia could be creating an army of mutant fish; secret government space weapons.

A strange footprint and a foul smell; a mysterious cluster of mounds on the moon; a whisper heard in the desert that resembles an ancient pharaoh's curse.

Jennifer and Jordan investigate claims that a vortex for supernatural forces is causing ships and planes to vanish without a trace.

A disgruntled fisherman makes the catch of a lifetime.

A man's supernatural experiences in a hotel don't stop there; two women witness the spirit of a little boy playing a trick on them; a man makes the biggest mistake of his life when he opens a cursed box.

Paranormal investigators get a chilling response from a dearly departed rock legend; a ghostly canine joins its former owner for a nighttime stroll; a man and his co-workers spot a gaggle of UFOs in the Louisiana bayou.

Melissa's cocaine and vodka-fuelled rages has her family living in fear; a sexual assault experience has pushed Melissa into a cycle of addiction and underage prostitution that is threatening to end her life before she turns 20.

Ursula investigates one of Chicago's most haunted places; hunters come face-to-face with a terrifying entity in a Utah hospital; Joe battles a powerful animal spirit summoned by dark satanic rituals.

The team investigates paranormal activity linked to an overwhelming number of natural disasters, contacts spirits in a hotel built atop a hospital, explores an eerie B & B, and finds troubled souls in America's most haunted city.

A policeman discovers an oval-shaped object without windows or doors; a woman spots an aura of light surrounding a small tree.

A 10,000-gallon water tank is found to be empty after an object is spotted hovering over it; amaranth plants wilt after a saucer-shaped craft hovers above them.

Every day, all around the world, in the most ordinary places, regular people are spotting UFOs; these witnesses will never see the night sky the same way, ever again.

After tragedies and struggles, Coleman's family believes his addiction to drugs will kill him before he's able to see his daughter again.

Ed Gein murders at least two women and desecrates the graves of dozens more to feed his bizarre fetishes; the so-called Butcher of Plainfield serves as the inspiration for Norman Bates in "Psycho" and Buffalo Bill in "Silence of the Lambs.".

Paranormal investigators are paralyzed by fear after one of them is possessed by a spirit; a family is convinced they're being visited by the ghost of their dog; a man is attacked by his own dinnerware after antagonizing an entity.

A shadow person in an abandoned Pennsylvania asylum; an Iowa couple accidentally brings home a haunted statue; a mom in Kentucky discovers a boogeyman hiding in her daughter's closet.

A hospital is thrown into chaos; a police force looks in the wrong direction: how one nurse fooled the authorities to cause destruction and death by tampering with saline bags at Stockport's Stepping Hill Hospital.

Nick and his girlfriend, Emily, trace the path from privilege to deep addiction; a parental ultimatum and addiction counselling can potentially get this couple off a potent opioid and out of an increasingly violent life of crime.

Jennifer and Jordan investigate claims that a vortex for supernatural forces is causing ships and planes to vanish without a trace.

Examining whether centuries-old photos are proof that reincarnation is actually occurring; whether nuclear waste off the coast of Russia could be creating an army of mutant fish; secret government space weapons.

A strange footprint and a foul smell; a mysterious cluster of mounds on the moon; a whisper heard in the desert that resembles an ancient pharaoh's curse.

A shadow person in an abandoned Pennsylvania asylum; an Iowa couple accidentally brings home a haunted statue; a mom in Kentucky discovers a boogeyman hiding in her daughter's closet.

Paranormal investigators are paralyzed by fear after one of them is possessed by a spirit; a family is convinced they're being visited by the ghost of their dog; a man is attacked by his own dinnerware after antagonizing an entity.

The team investigates paranormal activity linked to an overwhelming number of natural disasters, contacts spirits in a hotel built atop a hospital, explores an eerie B & B, and finds troubled souls in America's most haunted city.

Coming face-to-face with tormented spirits that harass the living; confront a farmer's soul that plagues a New York restaurant; feeling the agony of patients on the site of a N.C., clinic; getting chills in an Ohio home built atop a graveyard.

Stories of escape that defy explanation; Harry Houdini pulls off escape acts; an attempted prison break from Alcatraz Federal Penitentiary; one man receives guidance that allows him to escape the South Tower of the World Trade Center on 9/11.

The team investigates paranormal activity linked to an overwhelming number of natural disasters, contacts spirits in a hotel built atop a hospital, explores an eerie B & B, and finds troubled souls in America's most haunted city.

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

Stories of escape that defy explanation; Harry Houdini pulls off escape acts; an attempted prison break from Alcatraz Federal Penitentiary; one man receives guidance that allows him to escape the South Tower of the World Trade Center on 9/11.

Nestled within an affluent suburb of Detroit, Jane and Bob Bashara live a picture-perfect life with a strong community of friends and grown children; they seem like a happy couple, but they are living in a complicated web of shocking, dark secrets.

Paranormal investigators are paralyzed by fear after one of them is possessed by a spirit; a family is convinced they're being visited by the ghost of their dog; a man is attacked by his own dinnerware after antagonizing an entity.

A shadow person in an abandoned Pennsylvania asylum; an Iowa couple accidentally brings home a haunted statue; a mom in Kentucky discovers a boogeyman hiding in her daughter's closet.