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.

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

Jay and Marie investigate Arizona tunnels; the Tolfs investigate a former jail in Michigan; Shannon encounters spirits in a house.

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.

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 team heads to an Alabama home where the inhabitants have seen shadow figures, been touched and have recorded a voice telling them to leave.

A single mother claims she is being physically assaulted by a spirit in her Kentucky home.

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.

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.

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

A man leaves his childhood ghosts behind in New York; a woman conjures a stunning encounter with a UFO in Philadelphia; a mysterious entity roams the streets of Turkey at night.

Learn how Dr. Lisa Tseng, a community doctor in Los Angeles, overprescribed pain medication to a host of young men and ended up with a life sentence for murder.

Natasha, a drug addict who spent her adolescence partying with her parents, gets the opportunity to turn her life around.

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.

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.

A man leaves his childhood ghosts behind in New York; a woman conjures a stunning encounter with a UFO in Philadelphia; a mysterious entity roams the streets of Turkey at night.

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

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

Explore the staggering list of crimes exposed during the EncroChat hack; race with authorities to apprehend a host of criminals around the world after a systemwide message alerts them that their once-secret network has been infiltrated by police.

Kelly and Steve extend their stay in Illinois to help the Kankakee Police Department look into another mysterious case -- the unsolved homicide of a mother-to-be and her unborn child.

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

Explore the staggering list of crimes exposed during the EncroChat hack; race with authorities to apprehend a host of criminals around the world after a systemwide message alerts them that their once-secret network has been infiltrated by police.

An artist, his wife and children move into an idyllic hillside farm in Wales where they start to experience terrifying paranormal activity.

A woman vanishes during her nightly walk in 2018; the last time she's seen alive is by an ATM security camera that could hold the key to solving her disappearance.

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

A man leaves his childhood ghosts behind in New York; a woman conjures a stunning encounter with a UFO in Philadelphia; a mysterious entity roams the streets of Turkey at night.

Natasha, a drug addict who spent her adolescence partying with her parents, gets the opportunity to turn her life around.

The West coast is home to the infamous fault, the San Andreas. Stretching for almost a thousand miles beneath the feet of millions of Americans, but just north there is a larger fault that could trigger a megaquake, wreaking havoc across California.

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.

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.

PRS returns to the site where the glove print of a ghostly miner was discovered.

A New Jersey beauty salon is close to train tracks that may be haunted.

A firefighter encounters a terrifying apparition at the scene of a house fire; a police officer witnesses a ghostly priest administer last rites to an injured child; a security guard hunts for an invisible intruder inside a remote warehouse.

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.

As one of the most valuable and coveted precious metals on the planet, gold's power over mankind harkens back thousands of years.

A Utah couple is visited by the ghost of a murder victim; a team of paranormal investigators has a chilling encounter at an abandoned house in Florida; a man uses chimes to communicate with the dead in Mexico.

Suspicion builds as the DaVita dialysis center in Texas experiences a huge increase in code blues, with many patients succumbing to their injuries.

Nicholette's family hopes an intervention will save her from her out-of-control drug addiction.

It is nearly Christmas and Sammy and Tom's relationship hangs in the balance.

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

A Utah couple is visited by the ghost of a murder victim; a team of paranormal investigators has a chilling encounter at an abandoned house in Florida; a man uses chimes to communicate with the dead in Mexico.

As one of the most valuable and coveted precious metals on the planet, gold's power over mankind harkens back thousands of years.

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

A mysterious creature spotted in a Chinese river may be the infamous water dragon; a strange, pulsing sound may be to blame for several soldiers' curious physical ailments; a child miraculously survives a terrifying car crash.

The truth behind a pattern of UFO sightings near volcanoes; the origin of the strange stone spheres of Costa Rica; the secret of an unidentified man living alone in the jungle.

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.

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

A mysterious creature spotted in a Chinese river may be the infamous water dragon; a strange, pulsing sound may be to blame for several soldiers' curious physical ailments; a child miraculously survives a terrifying car crash.

The truth behind a pattern of UFO sightings near volcanoes; the origin of the strange stone spheres of Costa Rica; the secret of an unidentified man living alone in the jungle.

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.

Kelly and Terri investigate the 2015 homicide of a beloved father, veteran and Little League coach; a reexamination of the crime scene reveals a terrifying clue into who may have killed him.

As one of the most valuable and coveted precious metals on the planet, gold's power over mankind harkens back thousands of years.

A Utah couple is visited by the ghost of a murder victim; a team of paranormal investigators has a chilling encounter at an abandoned house in Florida; a man uses chimes to communicate with the dead in Mexico.

Nicholette's family hopes an intervention will save her from her out-of-control drug addiction.

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.

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.

Odd light patterns are seen across multiple counties in Texas on the same night; In France, after a powerful encounter a man's previous knee injury is completely healed.

The first sightings of the UFO flap in Piedmont, Mo. are reported; Over 500 reports are made in the following months; A family driving to Ontario encounters mysterious lights and a cigar-shaped craft.

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.

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

Discover why the perfect life of Scott Rogers, a charismatic pastor in Baton Rouge, Louisiana, was just smoke and mirrors. Untangle a web of lies, deceptions, and heinous crimes that left two people dead and tore his family and community apart.

America's monuments are inarguably impressive due to their colossal size and scope, their groundbreaking feats of engineering, and their storied histories, as well as the closely guarded secrets their implacable facades may be hiding.

A woman in Tennessee is terrified to discover she is not alone while working from home; a ghoulish creature creeps up behind a group of friends in Indonesia; a Minnesota man seeks answers about a UFO sighting near his house.

Malcolm Webster's wife, Claire, died in a car crash in a remote part of Scotland; his second wife Felicity almost dies in similar circumstances in New Zealand.

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.

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 mysterious creature spotted in a Chinese river may be the infamous water dragon; a strange, pulsing sound may be to blame for several soldiers' curious physical ailments; a child miraculously survives a terrifying car crash.

The truth behind a pattern of UFO sightings near volcanoes; the origin of the strange stone spheres of Costa Rica; the secret of an unidentified man living alone in the jungle.

A woman in Tennessee is terrified to discover she is not alone while working from home; a ghoulish creature creeps up behind a group of friends in Indonesia; a Minnesota man seeks answers about a UFO sighting near his house.

America's monuments are inarguably impressive due to their colossal size and scope, their groundbreaking feats of engineering, and their storied histories, as well as the closely guarded secrets their implacable facades may be hiding.

Stroll down the corridors of the Old Hospital on College Hill in Williamson, West Virginia. Explore reports of childlike laughter echoing through the building, then try to find an explanation.

Uncovering the identity of rage-filled things that go bump in the night; going ghost hunting in a community theatre in a town with a violent past; visiting a spooky honky-tonk; chasing a phantom that's trying to eject a historical home's new owner.

As one of the most valuable and coveted precious metals on the planet, gold's power over mankind harkens back thousands of years.

Stroll down the corridors of the Old Hospital on College Hill in Williamson, West Virginia. Explore reports of childlike laughter echoing through the building, then try to find an explanation.

Stepping into the crosshairs in Bellaire, a village that sits on a focal point for paranormal energy; exploring the bloody history of warfare, mining disasters and mass casualties that make this town a haunted hot spot.

As one of the most valuable and coveted precious metals on the planet, gold's power over mankind harkens back thousands of years.

For the 100th case, the 2007 murder of a popular college student who was stabbed to death in her bed; help is needed from forensic pathologist, digital forensics expert and DNA lab to solve the case.

America's monuments are inarguably impressive due to their colossal size and scope, their groundbreaking feats of engineering, and their storied histories, as well as the closely guarded secrets their implacable facades may be hiding.

A woman in Tennessee is terrified to discover she is not alone while working from home; a ghoulish creature creeps up behind a group of friends in Indonesia; a Minnesota man seeks answers about a UFO sighting near his house.

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.

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.

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.

A firefighter encounters a terrifying apparition at the scene of a house fire; a police officer witnesses a ghostly priest administer last rites to an injured child; a security guard hunts for an invisible intruder inside a remote warehouse.

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.

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 finds startling paranormal links to Montreal's boozy, corrupt past in the 1920s and '30s, such as a man whose corpse became an attraction, a woman haunted by ghost children, and a murder victim in a notorious cabaret.

Investigating the consequences of not letting the deceased rest in peace; learning how a plot of Mississippi land and a Michigan dream home became living nightmares; meeting a Pittsburgh man who got more than he bargained for in his vintage home.

Broadcaster Dom Joly and his family is being taunted by a ghostly opera singer; making a surprising historical connection as Jayne unravels this musical mystery.

Kelly, Tonya and the Alcoa Police Department investigate the 1990 rape and murder of a beloved 80-year-old grandmother and consider if the perpetrator may have been a sadistic random intruder or a member of her own family.

As one of the most valuable and coveted precious metals on the planet, gold's power over mankind harkens back thousands of years.

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

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.

Kelly and Steve extend their stay in Illinois to help the Kankakee Police Department look into another mysterious case -- the unsolved homicide of a mother-to-be and her unborn child.

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

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

Kelly, Tonya and the Alcoa Police Department investigate the 1990 rape and murder of a beloved 80-year-old grandmother and consider if the perpetrator may have been a sadistic random intruder or a member of her own family.

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.

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.

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.

Stroll down the corridors of the Old Hospital on College Hill in Williamson, West Virginia. Explore reports of childlike laughter echoing through the building, then try to find an explanation.

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.

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.

Broadcaster Dom Joly and his family is being taunted by a ghostly opera singer; making a surprising historical connection as Jayne unravels this musical mystery.

Kelly, Tonya and the Alcoa Police Department investigate the 1990 rape and murder of a beloved 80-year-old grandmother and consider if the perpetrator may have been a sadistic random intruder or a member of her own family.

The West coast is home to the infamous fault, the San Andreas. Stretching for almost a thousand miles beneath the feet of millions of Americans, but just north there is a larger fault that could trigger a megaquake, wreaking havoc across California.

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.

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.

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.

Teenagers Gaye and her sister summon the dead; Marina Duarte is plagued by paranormal activity after a spirit board session; Lisa discovers that not all the ghosts haunting her childhood home are evil.

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

Paid programming.

A paramedic is haunted by the restless spirit of a dead Army officer; a security guard encounters a demonic presence while investigating an abandoned hospital ward.

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

A trio of explorers gets much more than they bargained for in an abandoned asylum in the UK; a look at an irate, door-slamming, doorbell-ringing phantom that keeps freaking a New York family out.

Kelly and Steve extend their stay in Illinois to help the Kankakee Police Department look into another mysterious case -- the unsolved homicide of a mother-to-be and her unborn child.

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

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.

Stroll down the corridors of the Old Hospital on College Hill in Williamson, West Virginia. Explore reports of childlike laughter echoing through the building, then try to find an explanation.

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.

A holiday elf perched in a family home attracts the spirit of a little boy; a man in Canada is called out by name by a phantom voice; did a Montana man catch something on his thermal camera from another world?

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.

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

Broadcaster Dom Joly and his family is being taunted by a ghostly opera singer; making a surprising historical connection as Jayne unravels this musical mystery.

A holiday elf perched in a family home attracts the spirit of a little boy; a man in Canada is called out by name by a phantom voice; did a Montana man catch something on his thermal camera from another world?

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.

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

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

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

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.

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.

A family seeks help after their daughter is physically attacked by a demonic entity; a team is surprised by the intensity of paranormal activity at a historic inn; an investigator encounters the spirit of a long-dead musician in her former home.

Examine strange relics forgotten by time; visit a perturbing circle of stone in the Golan Heights; a mountain of headless statues in Turkey; a castle left to crumble in the Saudi Arabian desert; a time-worn secret in the wilds of Peru.

A woman is attacked by a demonic presence in her family's Texas home; a Toronto man receives a frantic message from an unsettling group of ghosts before confronting a dark and powerful entity lurking in his new 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.

A police officer's family is tormented by demons.

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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.

For decades, the debate has raged as to what exactly unidentified flying objects really are; theories have been put forth that attribute UFOs to everything from secret military aircraft to weather phenomena and more.

A cowboy narrowly avoids a brush with a scheming skinwalker; multiple UFOs loom large over San Diego; a family in Malaysia is petrified when an unknown creature slithers out of a toilet.

After Eric Lloyd's wife claims his death was due to natural causes, Marie Whiston, who had been looking after him between nursing shifts, becomes anxious to attribute his demise to ill health.

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.

A holiday elf perched in a family home attracts the spirit of a little boy; a man in Canada is called out by name by a phantom voice; did a Montana man catch something on his thermal camera from another world?

A look at why so many people see a vision of Jesus in seemingly normal things such as a tree stump or an antique cabinet.

Still recovering from her near-fatal accident, Alison finds herself hounded by the ghostly gaggle, who now realize that she can both see and hear them; Mike's attempts to turn the old house into a home leads to a DIY disaster.

A cowboy narrowly avoids a brush with a scheming skinwalker; multiple UFOs loom large over San Diego; a family in Malaysia is petrified when an unknown creature slithers out of a toilet.

For decades, the debate has raged as to what exactly unidentified flying objects really are; theories have been put forth that attribute UFOs to everything from secret military aircraft to weather phenomena and more.

Beautiful, ambitious reporter Jennifer Servo is shockingly murdered in 2002; Kelly and Steve are determined to help the Abilene Police Department catch her killer.

In Bedfordshire, police detectives investigate fraud against an elderly man and the exploitation of young people by a gang.

Burlington, N.C., is a town built on family, God, and Southern hospitality, but it's shaken to its core when a local Sunday school teacher is brutally murdered.

Beautiful, ambitious reporter Jennifer Servo is shockingly murdered in 2002; Kelly and Steve are determined to help the Abilene Police Department catch her killer.

In Bedfordshire, police detectives investigate fraud against an elderly man and the exploitation of young people by a gang.

Burlington, N.C., is a town built on family, God, and Southern hospitality, but it's shaken to its core when a local Sunday school teacher is brutally murdered.

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.

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.

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.