TOTALLY ENTERTAINING

Exploring some of the most cavernous places on the planet, including an expansive Siberian crater with no explainable origin, Greenland's bizarre black holes, an ancient forbidden well in the Yemeni desert, and a voluminous void in Antarctica.

A perfect circle carved around an ancient peak; a scary phenomenon in the Pacific; strange shapes in a Middle Eastern desert; a formation below the ocean's surface.

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.

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.

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.

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.

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.

Hospital orderly Donald Harvey is seen as a good worker, but when he confesses to multiple murders, no one initially believes him; he goes on to become one of America's most prolific serial killers.

For centuries, fantastic tales of terrifying monsters have fascinated mankind; bizarre beasts of all shapes and sizes have been portrayed in some of history's most classic stories and folklore.

Examine the 1967 case in which residents of the Shag Harbour fishing community saw an object fall from the night sky and crash into the ocean.

Examining whether a girl whose reflection doesn't match her expression is proof of a simulated reality; suggestion that Mars was colonized centuries ago; a mysterious hum being heard around the world.

Werewolves were once so feared, people suspected of the power were hunted and killed, but even so, many admitted that they could become these deadly creatures, and new evidence reveals why a powerful hallucinogenic drug could be to blame.

For centuries, fantastic tales of terrifying monsters have fascinated mankind; bizarre beasts of all shapes and sizes have been portrayed in some of history's most classic stories and folklore.

Examine the 1967 case in which residents of the Shag Harbour fishing community saw an object fall from the night sky and crash into the ocean.

Examining whether a girl whose reflection doesn't match her expression is proof of a simulated reality; suggestion that Mars was colonized centuries ago; a mysterious hum being heard around the world.

Werewolves were once so feared, people suspected of the power were hunted and killed, but even so, many admitted that they could become these deadly creatures, and new evidence reveals why a powerful hallucinogenic drug could be to blame.

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.

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.

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 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?

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.

The phenomenon of child ghosts and its consequences when medical facilities become their playgrounds.

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

Examine the 1967 case in which residents of the Shag Harbour fishing community saw an object fall from the night sky and crash into the ocean.

Jimmy Hoffa makes enemies easily.

Examining whether a girl whose reflection doesn't match her expression is proof of a simulated reality; suggestion that Mars was colonized centuries ago; a mysterious hum being heard around the world.

For centuries, fantastic tales of terrifying monsters have fascinated mankind; bizarre beasts of all shapes and sizes have been portrayed in some of history's most classic stories and folklore.

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.

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 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 bushcraft expert in England encounters a bigfoot-like creature; a walk down Route 66 in Arizona turns terrifying; three men in Argentina discover something receding into a coffin; mysterious orbs try to communicate with a woman in New Jersey.

Dearly departed patrons frequent a UK pub; a pregnant woman is stalked by a shapeshifting creature in the Philippines; a Louisiana man witnesses ghostly children playing on a school bus.

Two investigators feel unwelcomed by spirits at an abandoned Indiana infirmary; a high-flying cryptid gives a warning in Chicago; a woman in Mexico is shocked to see her painting come to life.

An investigator seeks answers to numerous reports of UAPs in New Jersey; two hikers take refuge from a storm in a haunted hut in Scotland; a California man's canine companion calls out from the other side.

Three investigators brave an abandoned penitentiary with a violent past in Tennessee; a piano-playing ghost entertains guests in an Upstate New York house rental; a mysterious figure looms over a coal mine in Mexico.

Nurse Charles Cullen said he hated to see people suffer, but he becomes the most prolific serial killer in New Jersey history; he confesses to murdering up to forty patients, but some believe there were as many as 300.

The team is baffled when an archaeologist is poisoned during a dig, but there is no evidence to prove how it was done; Neville tests his skills on an island crab-cooking competition.

Before midnight, Frank and Lu must recover a precious jewel and a rebellious teenager.

When Thomas sides against her findings on a controversial case, Nikki suspects foul play.

The team is baffled when an archaeologist is poisoned during a dig, but there is no evidence to prove how it was done; Neville tests his skills on an island crab-cooking competition.

Before midnight, Frank and Lu must recover a precious jewel and a rebellious teenager.

Behind the walls of Clayton County Jail, deteriorating infrastructure creates dangerous conditions for both inmates and staff.

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.

Guy and Maurice work to free Janet from the grip of the poltergeist as the case reaches its conclusion.

Vanessa Mitchell buys a house rumored to be a former witches' prison, and experiences increasingly strange incidents in her home.

Two prank-obsessed teenagers dare each other to spend the night in an allegedly haunted forest.

A perfect circle carved around an ancient peak; a scary phenomenon in the Pacific; strange shapes in a Middle Eastern desert; a formation below the ocean's surface.

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 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.

During the renaissance, advances were made in both science and the arts, but many paintings have a mysterious UFO.

Alison and Mike are trying to find a semi-harmonious routine with the ghostly housemates of Button House and are working towards a new money-making venture to fund their perpetual renovations.

A cursed church hides centuries of eerie legends and unexplained paranormal events.

Pots of gold and wishes granted is what's promised if you catch a Leprechaun.

Work with the Hull Major Crime Team to unravel a case in which twin brothers bent on revenge beat a man to death; discover which twin delivered the fatal punch before the clock ticks down and the suspects are released.

In a spate of terrifying shop robberies, the criminals brandish a meat cleaver and knife; police must act quickly before the violence escalates.

Following the work of police detectives in Britain as they navigate the intricacies of producing irrefutable evidence, conducting interviews and finding ways to make the guilty confess.

In Grimsby, a vicious mass street brawl causes mayhem and leaves innocent bystanders with serious injuries; it's a desperate race against time as detectives are tipped off that one of the key suspects is trying to flee the UK to Romania.

In Grimsby, a vicious mass street brawl causes mayhem and leaves innocent bystanders with serious injuries; it's a desperate race against time as detectives are tipped off that one of the key suspects is trying to flee the UK to Romania.

A man is viciously attacked on his doorstep with what appears to be a gun; armed police arrest a gang of four, but it's a race against time to prove they have the right men.

A man is viciously attacked on his doorstep with what appears to be a gun; armed police arrest a gang of four, but it's a race against time to prove they have the right men.

A rising pop star is gunned down in her prime; the future is bright for Selena Quintanilla until her business manager Yolanda Saldivar takes it all away; what drives her apparent number one fan to become her killer?

A man vanishes, and a patient flees the hospital after a suspected heart attack, both for unknown reasons.

Meet a witness who conceals evidence that implicates her in a friend's murder.

Jimmy Hoffa makes enemies easily.

Behind the walls of Clayton County Jail, deteriorating infrastructure creates dangerous conditions for both inmates and staff.

A detective squad pieces together how a man was robbed, badly beaten and left with no memory of the incident; hunting down a promising lead and seeing if CCTV footage of the suspects is enough for a confrontation in the interview room.