Experts investigate if a mysterious caller had inside knowledge about the assassination of President John F. Kennedy.

Tallying up the unsettling occurrences in reality star Chloe Ferry's isolated mansion, where things go missing and windows mysteriously shatter in the dead of night; learning about a terrifying shadow man and the home's link to the Geordie Ripper.

In Florida, haunted doll shows off its magic; a family in Oklahoma has a ghostly new roommate; a mysterious pulsing cylinder is seen floating above the sea in Chile; a misty cryptid is caught on a security cam in the woods of Wisconsin.

Mike and Alison receive an offer far beyond their expectations; they must make a decision, the result of which will change their lives forever.

Experts investigate if a mysterious caller had inside knowledge about the assassination of President John F. Kennedy.

A 47-year-old disabled woman from Cambridgeshire is found dead with her throat slit; no murder weapon is found in her home; despite few clues, local gossip uncovers details about the victim and points to a possible suspect.

Detectives in Sydney launch a massive search for a tourist with life-threatening medical conditions and the beloved brother of a bestselling author goes missing in Victoria.

Experts investigate if a mysterious caller had inside knowledge about the assassination of President John F. Kennedy.

Mike and Alison receive an offer far beyond their expectations; they must make a decision, the result of which will change their lives forever.

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.

Investigators face an entity known as Big Black in Indiana; Richard encounters a ghost in a home where a double murder-suicide took place; Karlo investigates an old school building.

Decoding the secrets of long-lost human settlements; scrutinizing a mysterious Norwegian mound, a prehistoric stone circle on the banks of the Tagus River, a lost city in the cradle of civilization and bizarre rock shapes.

A 12-year-old boy senses something terrifying in the basement.

With all the secrets, lies, greed, and infidelity, Ernie and Charlene Scherer's American-dream life was not exactly what it seemed like; a look into how the exposure of their dangerous double life led to one last fatal gamble.

A woman and her daughter are being tormented by moving chairs, apparitions and the sounds of chains and doors locking.

Discussing how the human body can catch fire without cause.

Kelly and Steve Spingola investigate the strange case of a man who appeared to have died from natural causes; when his cremation revealed a bullet in his body, his death became a murder investigation.

A house that narrowly dodges the path of a tornado; rain that falls from the sky like blood; lightning that follows into the home.

A Kentucky woman hires an empath to rid her home of a pesky poltergeist; a terrifying creature holes up in a barn at night; a Russian cosmonaut spots a UFO over Antarctica.

Review the evidence when the accidental death of a doctor's wife, Leslie Neulander, doesn't add up; learn of local rumours that pushed the DA to re-examine photos of the incident; see why Leslie's husband, Bob, immediately became suspect number one.

Jade's family is scared that she won't live much longer with her addiction to opioids and cocaine, without an intervention.

In Florida, haunted doll shows off its magic; a family in Oklahoma has a ghostly new roommate; a mysterious pulsing cylinder is seen floating above the sea in Chile; a misty cryptid is caught on a security cam in the woods of Wisconsin.

Discussing how the human body can catch fire without cause.

It's coming up to Christmas and Mike's mum is staying; Betty quickly overstays her welcome, but Alison and Mike don't quite have the heart to tell her; just as she decides to leave of her own volition, Betty suspects something is terribly wrong.

A Kentucky woman hires an empath to rid her home of a pesky poltergeist; a terrifying creature holes up in a barn at night; a Russian cosmonaut spots a UFO over Antarctica.

A house that narrowly dodges the path of a tornado; rain that falls from the sky like blood; lightning that follows into the home.

Kelly and Tonya delve into the grisly multiple murders of a young mother, grandmother, toddler, and newborn baby; forensic handwriting analysis could help identify the killer and author of a frightening message written on the wall.

After a disabled 47-year-old woman appears with her throat cut at her home in Wisbech, Cambridgeshire, murder detectives arrest suspects but lack sufficient evidence to charge anyone.

The murder of a vibrant 21-year-old leaves the peaceful community of Knoxville, Tenn. questioning its core values; a family's persistence reminds Marble City what it's made of and residents band together to bring a killer down.

Kelly and Tonya delve into the grisly multiple murders of a young mother, grandmother, toddler, and newborn baby; forensic handwriting analysis could help identify the killer and author of a frightening message written on the wall.

After a disabled 47-year-old woman appears with her throat cut at her home in Wisbech, Cambridgeshire, murder detectives arrest suspects but lack sufficient evidence to charge anyone.

The murder of a vibrant 21-year-old leaves the peaceful community of Knoxville, Tenn. questioning its core values; a family's persistence reminds Marble City what it's made of and residents band together to bring a killer down.

Looking beneath the veneer of money, connections and fast cars that surrounded Tennessee couple Joe and Tina Corona; learning how secret lovers, shady investments and threats to reveal Joe's financial sins added up to the perfect recipe for murder.

Examining the evil acts that Jennifer Sybert, a hairdresser in Florida, tried to keep hidden from her colleague, top stylist Joleen Cummings; an entanglement with Joleen's ex blows the lid off Jennifer's criminal past, and leads to a ghastly slaying.

With all the secrets, lies, greed, and infidelity, Ernie and Charlene Scherer's American-dream life was not exactly what it seemed like; a look into how the exposure of their dangerous double life led to one last fatal gamble.

Scratching the surface of Edward Shin's existence and seeing how the sociopath hid under a squeaky-clean exterior before his business partner, Chris Smith, started to dig up the truth.

Hunt for the truth in Massachusetts; Salem's ghosts -- including that of the first woman hanged for witchcraft -- reveal things about the city's infamous witch trials; a message from a man executed in the worst way imaginable.

The team examines the hauntings in the Scott County Jail, where they meet cutting-edge historians who believe that the paranormal field can help preserve history.

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.

Zoom in on some otherworldly sights; spot a giant glacier on the Red Planet, let the milky seas off the coast of Java bathe your vision, ponder a huge hexagon floating above Saturn and take a spin around a doughnut-shaped lake in Saskatchewan.

A woman is terrified by a dark hooded figure spotted in her West Virginia home that reportedly tormented her physician husband just before his violent death.

A teen sees an unusual pattern of lights in the sky and is terrified when they seem to dive-bomb him; a UFO sighting in France becomes one of the most scientifically investigated cases.

Kelly and Tonya help police keep their promise to a grieving mother to solve her daughter's murder; an examination of the victim's cell phone data brings a horrifying tale of obsession and brutality to light.

A miraculous meteorite falling from the heavens and a chunk of sandstone considered so sacred that wars have been fought to protect it; throughout history, many have insisted that simple stones can do everything from choosing a king to causing death.

Ghostly guests attack a woman; a lake monster surfaces in Sweden.

Confront the dark side of paramedic Paul Novak, who hid his deadly impulses beneath a veneer of heroism; explore the evidence that helped investigators determine that this manipulative, unfaithful man brutally murdered his estranged wife, Catherine.

Terrifying true stories of Canadians facing addictions to drugs, alcohol, or other behaviours.

Kelly and Tonya delve into the grisly multiple murders of a young mother, grandmother, toddler, and newborn baby; forensic handwriting analysis could help identify the killer and author of a frightening message written on the wall.

The murder of a vibrant 21-year-old leaves the peaceful community of Knoxville, Tenn. questioning its core values; a family's persistence reminds Marble City what it's made of and residents band together to bring a killer down.

Ghostly guests attack a woman; a lake monster surfaces in Sweden.

A miraculous meteorite falling from the heavens and a chunk of sandstone considered so sacred that wars have been fought to protect it; throughout history, many have insisted that simple stones can do everything from choosing a king to causing death.

More than 80% of the Earth's oceans remain unexplored, and in many ways, the underwater world is the final frontier; as new technology allows people to explore oceans and deep lakes more than ever before, nobody knows what they will find.

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.

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.

More than 80% of the Earth's oceans remain unexplored, and in many ways, the underwater world is the final frontier; as new technology allows people to explore oceans and deep lakes more than ever before, nobody knows what they will find.

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.

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.

Kelly and Steve aid the Racine Police Department in solving the homicide of a young mother abducted from her job as a security guard and found bound and gagged in the trunk of her car.

A miraculous meteorite falling from the heavens and a chunk of sandstone considered so sacred that wars have been fought to protect it; throughout history, many have insisted that simple stones can do everything from choosing a king to causing death.

Ghostly guests attack a woman; a lake monster surfaces in Sweden.

Terrifying true stories of Canadians facing addictions to drugs, alcohol, or other behaviours.

Jay and Marie witness strange occurrences in their home after a cemetery investigation; the Tolfs investigate an old hospital in Michigan; Shannon and her team investigate a mansion in New York.

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.

Hunt for the truth in Massachusetts; Salem's ghosts -- including that of the first woman hanged for witchcraft -- reveal things about the city's infamous witch trials; a message from a man executed in the worst way imaginable.

Guests flee a hotel in Pennsylvania amid reports of paranormal activity, drawing the attention of the investigative team.

The team tries to help a couple besieged by a purported shadow demon in their North Carolina home.

With all the secrets, lies, greed, and infidelity, Ernie and Charlene Scherer's American-dream life was not exactly what it seemed like; a look into how the exposure of their dangerous double life led to one last fatal gamble.

The team tackles the mysterious 1986 murder of a young Native American mother whose skull was found in the woods; her infant daughter, now grown, is desperate to know if her father was involved.

Can humans predict the future by use of prophets and dreams, if so, can humankind harness this knowledge to avoid future deadly events.

A colorful anomaly dazzles onlookers; orbs parade through a jail.

Meet nurse Beverley Allitt, who conducted a reign of terror in a Lincolnshire hospital's pediatric ward; examine the four mysterious deaths that set off alarm bells for police and led to an emotional trial that put this "Angel of Death" behind bars.

Nathan's family stages an intervention in an attempt to help him with his opioid addiction.

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.

More than 80% of the Earth's oceans remain unexplored, and in many ways, the underwater world is the final frontier; as new technology allows people to explore oceans and deep lakes more than ever before, nobody knows what they will find.

A colorful anomaly dazzles onlookers; orbs parade through a jail.

Can humans predict the future by use of prophets and dreams, if so, can humankind harness this knowledge to avoid future deadly events.

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

Matt Horne, NCA Gold Command, emphasizes the operation's secrecy; a leak emerges; a gangland murder in Rotterdam, Netherlands, that is linked to the torture chamber plot raises concerns.

Kelly and the team help the Lake Station Police department look into the 2007 slaying of a kind-hearted WWII veteran killed with a sledgehammer; tracing the purchases on his stolen credit card may be the key to solving the case.

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

Matt Horne, NCA Gold Command, emphasizes the operation's secrecy; a leak emerges; a gangland murder in Rotterdam, Netherlands, that is linked to the torture chamber plot raises concerns.

A young mother fears that her father-in-law has returned from the dead with a horrific plan to steal her children.

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.

Can humans predict the future by use of prophets and dreams, if so, can humankind harness this knowledge to avoid future deadly events.

A colorful anomaly dazzles onlookers; orbs parade through a jail.

Nathan's family stages an intervention in an attempt to help him with his opioid addiction.

Across North America and the rest of the world, hurricanes, storm surges, earthquakes and sea level rise threaten major cities and lead to natural catastrophes.

Zoom in on some otherworldly sights; spot a giant glacier on the Red Planet, let the milky seas off the coast of Java bathe your vision, ponder a huge hexagon floating above Saturn and take a spin around a doughnut-shaped lake in Saskatchewan.

With all the secrets, lies, greed, and infidelity, Ernie and Charlene Scherer's American-dream life was not exactly what it seemed like; a look into how the exposure of their dangerous double life led to one last fatal gamble.

A couple cannot sleep through the night in their Indiana home due to all the racket of unseen forces.

The team investigates an Indian massacre that might have left a curse on the land occupied by a sprawling mansion on Detroit's Grayhaven Island.

A rookie EMT gets an unwanted guest, a haunting lullaby lures firefighters inside a burning building; a paramedic encounters a terrifying apparition on a remote road.

Kelly and Steve investigate the murder of a 17-year-old girl found strangled to death by the railroad tracks.

Throughout history, many have believed that certain places, things, or even people can be tainted with dark curses; ominous lakes that morph into watery graves; paintings and precious stones that bring death and destruction to their keepers.

UFOs fly high above a neighborhood in the Bronx; spirit of a 3,000-year-old mummy in a British museum; Skunk Ape in Florida.

Unravel Dr. Harold Shipman's descent into darkness and the failures that allowed him to murder 250 patients; hear from a victim's family, dig into recordings and see why this respected GP's reputation kept him out of the spotlight for far too long.

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

Jenny desperately tries to resolve her financial difficulties; despite Val's attempts to keep the family together, Anna's birthday lunch spirals out of control.

After a disabled 47-year-old woman appears with her throat cut at her home in Wisbech, Cambridgeshire, murder detectives arrest suspects but lack sufficient evidence to charge anyone.

UFOs fly high above a neighborhood in the Bronx; spirit of a 3,000-year-old mummy in a British museum; Skunk Ape in Florida.

Throughout history, many have believed that certain places, things, or even people can be tainted with dark curses; ominous lakes that morph into watery graves; paintings and precious stones that bring death and destruction to their keepers.

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.

An unidentified creature washed up on the beach; an object is seen over the skies of Inner Mongolia; Tony Harris and his team of experts examine new videos and photographs to reach a verdict on what's behind strange happenings.

A serpentine monster lurking under the water in the London's Thames River; UFOs spotted crossing the moon; how some people are able to defy the fear of heights.

Podcast host Sam Tripoli joins Jennifer as she heads to Montauk, N.Y., to investigate stories that the U.S. government was conducting radical experiments on young children -- including mind control tests and time travel.

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.

An unidentified creature washed up on the beach; an object is seen over the skies of Inner Mongolia; Tony Harris and his team of experts examine new videos and photographs to reach a verdict on what's behind strange happenings.

A serpentine monster lurking under the water in the London's Thames River; UFOs spotted crossing the moon; how some people are able to defy the fear of heights.

Podcast host Sam Tripoli joins Jennifer as she heads to Montauk, N.Y., to investigate stories that the U.S. government was conducting radical experiments on young children -- including mind control tests and time travel.

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.

Throughout history, many have believed that certain places, things, or even people can be tainted with dark curses; ominous lakes that morph into watery graves; paintings and precious stones that bring death and destruction to their keepers.

UFOs fly high above a neighborhood in the Bronx; spirit of a 3,000-year-old mummy in a British museum; Skunk Ape in Florida.

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

Investigators face an entity known as Big Black in Indiana; Richard encounters a ghost in a home where a double murder-suicide took place; Karlo investigates an old school building.

Hunt for the truth in Massachusetts; Salem's ghosts -- including that of the first woman hanged for witchcraft -- reveal things about the city's infamous witch trials; a message from a man executed in the worst way imaginable.

Four US Air Force reservists are chased by strange lights while flying back to their base in Cleveland; Constable Alan Godfrey loses consciousness when he investigates a mysterious disruption in West Yorkshire.

A teen sees an unusual pattern of lights in the sky and is terrified when they seem to dive-bomb him; a UFO sighting in France becomes one of the most scientifically investigated cases.

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.

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.

Kelly and Steve try to solve the murder of a woman who was brutally stabbed and then lit on fire in an attempt conceal the crime; a neighbor's report of a mysterious black truck could lead investigators to her killer.

Discussing how the human body can catch fire without cause.

A woman in Utah plays catch with a ghost; a dog senses something spooky lurking inside his owner's home; a UFO hovers above a wind farm in California.

Hunt for evidence of foul play after a nurse's assistant is linked to 21 suspicious deaths in a West Virginia veterans' hospital; follow the FBI investigation, which finds proof that Reta Mays had been giving her patients lethal doses of insulin.

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

Podcast host Sam Tripoli joins Jennifer as she heads to Montauk, N.Y., to investigate stories that the U.S. government was conducting radical experiments on young children -- including mind control tests and time travel.

An unidentified creature washed up on the beach; an object is seen over the skies of Inner Mongolia; Tony Harris and his team of experts examine new videos and photographs to reach a verdict on what's behind strange happenings.

A serpentine monster lurking under the water in the London's Thames River; UFOs spotted crossing the moon; how some people are able to defy the fear of heights.

A woman in Utah plays catch with a ghost; a dog senses something spooky lurking inside his owner's home; a UFO hovers above a wind farm in California.

Uncover impostors' most daring secrets. Learn how Ferdinand Demara impersonated a naval surgeon despite having no medical credentials, meet a devious faux Rockefeller, and discover why Billy Tipton hid her real identity for a chance at a jazz career.

Visit a shrine where all faiths converge, then stand back as the team discovers a tear in its spiritual shield. Witness a powerful ritual that changes Dave forever, watch hidden secrets surface.

Discovering why the electromagnetic energy in mineral-rich mining areas seems to attract paranormal activity; facing down spirits that have made themselves at home in a California farmhouse; a clown-themed motel that is no laughing matter.

Many believe it to be the Word of God, but others claim it contains inconsistencies and contradictions that could only be manmade.

Visit a shrine where all faiths converge, then stand back as the team discovers a tear in its spiritual shield. Witness a powerful ritual that changes Dave forever, watch hidden secrets surface.

Visiting spirits that remain tied to the places that meant the world to them; feeling eerie energy in a historic Missouri mansion; facing a spectral sea captain in Nova Scotia; discovering a well of supernatural energy in a northern California hotel.

Many believe it to be the Word of God, but others claim it contains inconsistencies and contradictions that could only be manmade.

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

Uncover impostors' most daring secrets. Learn how Ferdinand Demara impersonated a naval surgeon despite having no medical credentials, meet a devious faux Rockefeller, and discover why Billy Tipton hid her real identity for a chance at a jazz career.

A woman in Utah plays catch with a ghost; a dog senses something spooky lurking inside his owner's home; a UFO hovers above a wind farm in California.

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

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.

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 rookie EMT gets an unwanted guest, a haunting lullaby lures firefighters inside a burning building; a paramedic encounters a terrifying apparition on a remote road.

With all the secrets, lies, greed, and infidelity, Ernie and Charlene Scherer's American-dream life was not exactly what it seemed like; a look into how the exposure of their dangerous double life led to one last fatal gamble.

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.

Paranormal investigators Corine Carey, Leanne Sallenback and Kelly Ireland travel to San Antonio, Texas to answer the panicked calls of local residents who have experienced paranormal phenomena tied to the Battle of the Alamo in 1836.

Marching into three small towns where the American Civil War once raged; crossing paths with terrifying entities that make residents' skin crawl; meeting a man who unwittingly awoke malevolent spirits while trying to preserve his town's history.

Checking out opera singer Russell Watson's idyllic farm, where an invisible visitor plays the piano and scares everyone; tracking down a cannibal killer with the team, who have to act fast to send this evil spirit back to the dark side.

The team helps the Abilene Police Department investigate the heartbreaking double homicide of a devoted mother and her young daughter strangled in their home; DNA evidence left at the scene might help identify their killer.

Many believe it to be the Word of God, but others claim it contains inconsistencies and contradictions that could only be manmade.

After a disabled 47-year-old woman appears with her throat cut at her home in Wisbech, Cambridgeshire, murder detectives arrest suspects but lack sufficient evidence to charge anyone.

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 the team help the Lake Station Police department look into the 2007 slaying of a kind-hearted WWII veteran killed with a sledgehammer; tracing the purchases on his stolen credit card may be the key to solving the case.

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

After a disabled 47-year-old woman appears with her throat cut at her home in Wisbech, Cambridgeshire, murder detectives arrest suspects but lack sufficient evidence to charge anyone.

The team helps the Abilene Police Department investigate the heartbreaking double homicide of a devoted mother and her young daughter strangled in their home; DNA evidence left at the scene might help identify their killer.

With all the secrets, lies, greed, and infidelity, Ernie and Charlene Scherer's American-dream life was not exactly what it seemed like; a look into how the exposure of their dangerous double life led to one last fatal gamble.

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.

Zoom in on some otherworldly sights; spot a giant glacier on the Red Planet, let the milky seas off the coast of Java bathe your vision, ponder a huge hexagon floating above Saturn and take a spin around a doughnut-shaped lake in Saskatchewan.

Visit a shrine where all faiths converge, then stand back as the team discovers a tear in its spiritual shield. Witness a powerful ritual that changes Dave forever, watch hidden secrets surface.

Review the evidence when the accidental death of a doctor's wife, Leslie Neulander, doesn't add up; learn of local rumours that pushed the DA to re-examine photos of the incident; see why Leslie's husband, Bob, immediately became suspect number one.

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.

Checking out opera singer Russell Watson's idyllic farm, where an invisible visitor plays the piano and scares everyone; tracking down a cannibal killer with the team, who have to act fast to send this evil spirit back to the dark side.

The team helps the Abilene Police Department investigate the heartbreaking double homicide of a devoted mother and her young daughter strangled in their home; DNA evidence left at the scene might help identify their killer.

Across North America and the rest of the world, hurricanes, storm surges, earthquakes and sea level rise threaten major cities and lead to natural catastrophes.

With all the secrets, lies, greed, and infidelity, Ernie and Charlene Scherer's American-dream life was not exactly what it seemed like; a look into how the exposure of their dangerous double life led to one last fatal gamble.

Decoding the secrets of long-lost human settlements; scrutinizing a mysterious Norwegian mound, a prehistoric stone circle on the banks of the Tagus River, a lost city in the cradle of civilization and bizarre rock shapes.

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.

Ryan Maki antagonizes a powerful and negative entity; Alicia Babcock believes there is something demonic in her closet; a woman describes how a demon comes to her in a dream.

EMT Rob Thompson pulls a man from a flaming wreck who is near death; police officer Vicki Schramm investigates an armed man breaking into an abandoned home; paramedic Jackie Williams assists a man who appears to be in serious psychosis.

Discussing how the human body can catch fire without cause.

It's coming up to Christmas and Mike's mum is staying; Betty quickly overstays her welcome, but Alison and Mike don't quite have the heart to tell her; just as she decides to leave of her own volition, Betty suspects something is terribly wrong.

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

Explores the UK's most haunted house, 30 East Drive in Pontefract, where the demonic Black Monk is reported to linger; coming into contact with otherworldly beings who could finally prove that UFOs exist.

Kelly and the team help the Lake Station Police department look into the 2007 slaying of a kind-hearted WWII veteran killed with a sledgehammer; tracing the purchases on his stolen credit card may be the key to solving the case.

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

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.

Visit a shrine where all faiths converge, then stand back as the team discovers a tear in its spiritual shield. Witness a powerful ritual that changes Dave forever, watch hidden secrets surface.

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.

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.

In Canada, a ghost hunter regrets summoning a demon in an abandoned house; in North Carolina, a beloved deceased dog visits its owner from the afterlife; a mysterious shapeshifting cryptid runs across a field in Argentina.

It's coming up to Christmas and Mike's mum is staying; Betty quickly overstays her welcome, but Alison and Mike don't quite have the heart to tell her; just as she decides to leave of her own volition, Betty suspects something is terribly wrong.

Discussing how the human body can catch fire without cause.

Checking out opera singer Russell Watson's idyllic farm, where an invisible visitor plays the piano and scares everyone; tracking down a cannibal killer with the team, who have to act fast to send this evil spirit back to the dark side.

In Canada, a ghost hunter regrets summoning a demon in an abandoned house; in North Carolina, a beloved deceased dog visits its owner from the afterlife; a mysterious shapeshifting cryptid runs across a field in Argentina.

It's coming up to Christmas and Mike's mum is staying; Betty quickly overstays her welcome, but Alison and Mike don't quite have the heart to tell her; just as she decides to leave of her own volition, Betty suspects something is terribly wrong.

Discussing how the human body can catch fire without cause.

After a disabled 47-year-old woman appears with her throat cut at her home in Wisbech, Cambridgeshire, murder detectives arrest suspects but lack sufficient evidence to charge anyone.

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

Discussing how the human body can catch fire without cause.

It's coming up to Christmas and Mike's mum is staying; Betty quickly overstays her welcome, but Alison and Mike don't quite have the heart to tell her; just as she decides to leave of her own volition, Betty suspects something is terribly wrong.

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.

The Tolfs investigate the site of one of the earliest recorded possessions; Karlo attempts to remove a spirit in a lakeside property; Eric investigates a former hospital.

Explores strongholds abandoned by their architects; a lost city in the Amazon jungle; a desert fortress made by humanity's most notorious empire; explores a city of identical castles; examines a Greek isle's bloody history from the air.

Grotesque figures invade a woman's house in the middle of the night; the spirit of an old man follows a couple home after they visit the site of an airplane crash.

Scratching the surface of Edward Shin's existence and seeing how the sociopath hid under a squeaky-clean exterior before his business partner, Chris Smith, started to dig up the truth.

A psychic picks up both a child's energy and a menacing presence in a Pennsylvania home.

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Kelly and Steve investigate the tragic homicides of a pregnant mother and her two-year-old son who died in an apartment fire while her husband escaped; an arson specialist is called in to help make sense of the clues and catch the killer.

The five senses: sight, smell, hearing, taste and touch; constructing the reality of the world around us, like a blank canvas continuously painted and repainted every day.

UFOs attempt to communicate with a man in California; a Greek village is riddled with spirits; a toddler plays tug of war with a ghost hogging the TV remote.

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.

Pamela's family hopes an intervention will save her from her addiction after being exposed to her father's drug addiction.

In Canada, a ghost hunter regrets summoning a demon in an abandoned house; in North Carolina, a beloved deceased dog visits its owner from the afterlife; a mysterious shapeshifting cryptid runs across a field in Argentina.

A look at this English town in Buckinghamshire and why so many spirits of the past haunt its streets.

Alison and Mike, a cash-strapped young couple struggling to buy their first home, think their prayers are answered when a distant relative bequeaths them a large estate, but the old house is haunted by the ghosts of its former inhabitants.

UFOs attempt to communicate with a man in California; a Greek village is riddled with spirits; a toddler plays tug of war with a ghost hogging the TV remote.

The five senses: sight, smell, hearing, taste and touch; constructing the reality of the world around us, like a blank canvas continuously painted and repainted every day.

Kelly and Steve join the Kankakee Police Department to help a woman who just missed seeing her mother's killer at their front door when she was 11 years old; decades later, efforts are made to recall any clues to help crack the case.

A young couple faces escalating online harassment and death threats; Rookie detective Emily Richardson investigates, uncovering unexpected twists.

New York City, known for its diversity and acceptance, becomes the focus for a sadistic serial killer targeting the gay community. It takes dogged determination and new technology to bring a monster's reign of terror to an end.

Kelly and Steve join the Kankakee Police Department to help a woman who just missed seeing her mother's killer at their front door when she was 11 years old; decades later, efforts are made to recall any clues to help crack the case.

A young couple faces escalating online harassment and death threats; Rookie detective Emily Richardson investigates, uncovering unexpected twists.

New York City, known for its diversity and acceptance, becomes the focus for a sadistic serial killer targeting the gay community. It takes dogged determination and new technology to bring a monster's reign of terror to an end.

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.

When a person's day job involves the oversight of missile silos, nuclear facilities or a military base, the last complication they want to deal with is a close encounter with a UFO; here, an already frightening phenomenon turns positively chilling.

Closest encounters and first-hand experiences with abductions.

Aircraft pilots and passengers have a scary experience when they come into close proximity to objects that doesn't appear on radar, accelerate at dizzying speeds and then stop on a dime.

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.

The hunt is on for the ghost brother of Diamond Point's building director, who still feels his presence in this city welcome center; investigate reports of apparitions, voices and phantom smells that keep popping up in the former family home.

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.

The team investigates an electronic voice phenomenon, recorded in a couple's Indiana home, that says, "Kill them.".

Paid programming.

In their freshest cold case yet, Kelly and Steve tackle the recent double-homicide of a loving grandfather and his elderly mother gunned down at home; the crime scene suggests a killer with military training.

Exploring the center of the Earth.

A shadow figure lurks in the halls of an abandoned asylum; UFO enthusiasts get the sighting of a lifetime in Southern California; a guardian angel saves a man from a horrific accident.

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.

Melanie's family hopes an intervention will save her, after a lifetime of trauma.

Kelly and Steve join the Kankakee Police Department to help a woman who just missed seeing her mother's killer at their front door when she was 11 years old; decades later, efforts are made to recall any clues to help crack the case.

New York City, known for its diversity and acceptance, becomes the focus for a sadistic serial killer targeting the gay community. It takes dogged determination and new technology to bring a monster's reign of terror to an end.

A shadow figure lurks in the halls of an abandoned asylum; UFO enthusiasts get the sighting of a lifetime in Southern California; a guardian angel saves a man from a horrific accident.

Exploring the center of the Earth.

Genius is widely considered to be the ability to change the world in an incredible way, like inventing new technology, deciphering the mysteries of the universe, or creating transcendent art, but its origin is a mystery.

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.

Getting insight into the last moments of England's King Richard III; deciphering a manuscript hiding taboo 15th-century knowledge; spotting indications of human sacrifice in Scotland; inspecting silver coins tied to turbulent times in Eastern Europe.

Genius is widely considered to be the ability to change the world in an incredible way, like inventing new technology, deciphering the mysteries of the universe, or creating transcendent art, but its origin is a mystery.

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.

Getting insight into the last moments of England's King Richard III; deciphering a manuscript hiding taboo 15th-century knowledge; spotting indications of human sacrifice in Scotland; inspecting silver coins tied to turbulent times in Eastern Europe.

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.

Exploring the center of the Earth.

A shadow figure lurks in the halls of an abandoned asylum; UFO enthusiasts get the sighting of a lifetime in Southern California; a guardian angel saves a man from a horrific accident.