Episode Thirteen takes them to every ghost hunter's holy grail: the Paranormal Research Foundation. This brooding, derelict mansion holds secrets and clues about bizarre experiments that took place there in the 1970s. It's also famously haunted, and the team hopes their scientific techniques and high tech gear will prove it. But as the house begins to reveal itself to them, proof of an afterlife might not be everything Matt dreamed of.

Lifestyle journalist Katrine escaped past traumas by moving to a coast renowned for seaside holidays and natural beauty. But when a vast hoard of human remains and prehistoric artifacts is discovered in nearby Brickburgh, a hideous shadow engulfs her life. Helene, a disillusioned lone parent, lost her brother, Lincoln, six years ago. Disturbing subterranean noises he recorded prior to vanishing, draw her to Brickburgh's caves. A site where early humans butchered each other across 60,000 years. Upon the walls, images of their nameless gods remain.

John Hawkins is counting down his last days as chief of police on the Lone Crow Reservation in the lonely, frigid woods of the Yukon. But when a faceless body with mysterious wounds washes up on the shores of the Porcupine River, he’s pulled deeper in than ever before. Hawkins and coroner Jacob Littlecorn suspect the disfigured body is that of theoretical physicist Graham Raphelson, also known as the “molecular madman of Trinity College”, who recently disappeared. 

Darkness lives within.... Cash strapped, working for agencies and living in shared accommodation, Stephanie Booth feels she can fall no further. So when she takes a new room at the right price, she believes her luck has finally turned. But 82 Edgware Road is not what it appears to be.

The Ruins follows two American couples enjoying a pleasant, lazy beach holiday together in Mexico. On an impulse, they go off with newfound friends in search of one of their group, the young German who, in pursuit of a girl, has headed for the remote Mayan ruins, site of a fabled archeological dig.

After the loss of a child along with a slew of agonizing misfortunes, Nick and Jess decide to end their lives. Unable to cope with the misery that fills their days, they commit one last act together and die in loving relief. But when Nick wakes up, he soon realizes that death isn't the gentle darkness he expected. Panicked and horrified, he struggles to understand the twisted abominations and hellish world he's now trapped in.

Once every year, Scoutmaster Tim Riggs leads a troop of boys into the Canadian wilderness for a weekend camping trip - a tradition as comforting and reliable as a good ghost story around a roaring bonfre. The boys are a tight-knit crew. There’s Kent, one of the most popular kids in school; Ephraim and Max, also well-liked and easygoing; then there’s Newt the nerd and Shelley the odd duck. For the most part, they all get along and are happy to be there - which makes Scoutmaster Tim’s job a little easier.

The red night of bells heralds global catastrophe. Annihilation on a biblical scale. Seeing the morning is no blessing. The handful of scattered survivors are confronted by blood-red skies and an infestation of predatory horrors that never originated on earth. An occupying force intent on erasing the remnants of animal life from the planet. Across the deserted landscapes of England, bereft of infrastructure and society, the overlooked can either hide or try to outrun the infernal hunting terrors. Until a rumour emerges claiming that the sea may offer an escape.

Since the 1970s, FantasticLand has been the theme park where "Fun is Guaranteed!" But when a hurricane ravages the Florida coast and isolates the park, the employees find it anything but fun. Five weeks later, the authorities who rescue the survivors encounter a scene of horror. Photos soon emerge online of heads on spikes outside of rides and viscera and human bones littering the gift shops, breaking records for hits, views, likes, clicks, and shares.

Joe works at a facility that performs human experimentation. His work just followed him home. The government wanted to unlock hidden abilities in the human mind. They put subjects in extreme sensory deprivation. All the test subjects went violently insane. But the research continued. Today it has been perfected. Almost perfected. 

January 1937. Jack Miller has just about run out of options. His shoes have worn through, he can't afford to heat his rented room in Tooting, and he longs to use his training as an specialist wireless operator instead of working in his dead-end job. When he is given the chance to join an arctic expedition, as communications expert, by a group of elite Oxbridge graduates, he brushes off his apprehensions and convinces himself to join them.

A group of close friends gathers at a secluded cabin in the wintry mountains of Colorado for a final holiday hurrah. Instead, it may be their last stand. First a massive blizzard leaves them marooned. Then the more chilling realization: Something is lurking in the woods, watching them, waiting.... Now a weekend of family, friends, and fun has turned into a test of love and loyalty in the face of inhuman horrors. The only hope for those huddled inside is to fight - tooth and nail, bullet and blade - for their lives. Otherwise, they’ll end up like the monsters’ other victims: bright pools of blood on glittering snow, screams lost in the vast mountains.

Marcus grew up believing his father killed his mother—then blamed it on the boogeyman under the bed. Always leave the lights on, his father warned, or the boogeyman will get you. Marcus still heeds the superstition, especially when he invites his new girlfriend over. Is Marcus haunted by a creature or has he just inherited his father’s murderous delusions? The night will tell.

Red has tried to keep his nose clean but the sins of his past still haunt him. They’ve forced him back into the darkness—toward a life he’d hoped to leave behind. Now he has just four days to make things right.

This forest isn't charted on any map. Every car breaks down at its treeline. Mina's is no different. Left stranded, she is forced into the dark woodland only to find a woman shouting, urging Mina to run to a concrete bunker. As the door slams behind her, the building is besieged by screams. Mina finds herself in a room with a wall of glass, and an electric light that activates at nightfall, when the watchers come above ground. These creatures emerge to observe their captive humans and terrible things happen to anyone who doesn't reach the bunker in time.