In February 1959, a group of nine experienced hikers in the Russian Ural Mountains died mysteriously on an elevation known as Dead Mountain. Eerie aspects of the incident—unexplained violent injuries, signs that they cut open and fled the tent without proper clothing or shoes, a strange final photograph taken by one of the hikers, and elevated levels of radiation found on some of their clothes—have led to decades of speculation over what really happened.

Nine wholesome university students mountaineering in the Urals go missing, and are later uncovered from the snows of a bleak forest's edge in the Siberian Taiga, in a series of grisly discoveries. Why were the climbers wearing no boots? Why were stout branches of the forest pines singed to a height of 30 feet? What were the mysterious markings in the bark of nearby trees? What was so-called "overwhelming force" that was capable of breaking eight ribs in a single blow without bruises?

We all love a mystery - but what about a mystery that has no solution? Delve into the shadowy world of unsolved disappearances and people who have vanished without a trace, never to be seen again. Such strange and chilling tales run the gamut of the terrifying and the bizarre and include crime victims, lost explorers, ships vanished at sea, outdoor disappearances, and supernatural mysteries that defy all explanation.

The mysteries surrounding the deaths of nine young, experienced ski hikers in 1959 have never been solved. On a trip through the Ural Mountains, the group of students first were reported missing and then were found deceased, but several were not located until months following the tragedy. Despite exhaustive investigations, there has never been a theory that explains exactly what killed the nine, and because of this, many unusual conjectures have arisen.

Hundreds have disappeared. So many that we've lost count. Once Search and Rescue teams pull out and the news cameras switch off, the spotlight on these individuals dim and the cases turn cold. What's more, hundreds of human remains are discovered every year and lie waiting to be identified in drawers, boxes, and unmarked graves scattered across Canada.

Destined to become a classic of adventure literature, The Last Season examines the extraordinary life of legendary backcountry ranger Randy Morgenson and his mysterious disappearance in California's unforgiving Sierra Nevada - mountains as perilous as they are beautiful. Eric Blehm's masterful work is a gripping detective story interwoven with the riveting biography of a complicated, original, and wholly fascinating man.

It’s Halloween night, 1984, in Coventry, Massachusetts, and two families are unraveling. Up and down the street, horrifying secrets are being revealed, and all the while, mixed in with the trick-or-treaters of all ages, four children who do not belong are walking door to door, merging with the kids of Parmenter Road. Children in vintage costumes with faded, eerie makeup. They seem terrified, and beg the neighborhood kids to hide them away, to keep them safe from The Cunning Man.

Colin Dickey is on the trail of America's ghosts. Crammed into old houses and hotels, abandoned prisons and empty hospitals, the spirits that linger continue to capture our collective imagination, but why? His own fascination piqued by a house hunt in Los Angeles that revealed derelict foreclosures and "zombie homes", Dickey embarks on a journey across the continental United States to decode and unpack the American history repressed in our most famous haunted places.

Just outside of Tokyo lies Aokigahara, a vast forest and one of the most beautiful wilderness areas in Japan...and also the most infamous spot to commit suicide in the world. Legend has it that the spirits of those many suicides are still roaming, haunting deep in the ancient woods. When bad weather prevents a group of friends from climbing neighboring Mt. Fuji, they decide to spend the night camping in Aokigahara. But they get more than they bargained for when one of them is found hanged in the morning - and they realize there might be some truth to the legends after all.

The Great Smoky Mountains National Park is the most visited national park in the country, with 12.1 million recreational visits in 2020. Aside from crowds of hikers, campers, and general tourists, there's a dark side to the Smokies, the town of Gatlinburg and the surrounding foothills. From strange disappearances, grisly murders and bone-chilling paranormal hauntings to ghost sightings, this pristine paradise has a lot more to offer than just serene hiking trails or camping. So put aside your nature guidebooks, and prepare for a wild ride on the dark side of the Great Smoky Mountains.

Since the days of conquistador Hernán Cortés, rumors have circulated about a lost city of immense wealth hidden somewhere in the Honduran interior, called the White City or the Lost City of the Monkey God. Indigenous tribes speak of ancestors who fled there to escape the Spanish invaders, and they warn that anyone who enters this sacred city will fall ill and die.

On February 13, 2017, two Indiana teenagers, Abigail Williams, 13, and Liberty German, 14, went for a walk in the woods near the abandoned Monon High Bridge. They never returned home.

As a park ranger with the National Park Service's law enforcement team, Andrea Lankford led search and rescue missions in some of the most beautiful (and dangerous) landscapes across America, from Yosemite to the Grand Canyon. But though she had the support of the agency, Andrea grew frustrated with the service's bureaucratic idiosyncrasies, and left the force after twelve years. Two decades later, however, she stumbles across a mystery that pulls her right back where she left off: three young men have vanished from the Pacific Crest Trail.

Bigfoot, Sasquatch, Yowie, Yeti...the idea that monstrous man-apes lurk in the remote forests and high mountain valleys of the world is an enduring and popular one. Hardly a week goes by without some report of a fresh encounter.

The real stories behind the scenery of America’s national parks. For 12 years, Andrea Lankford lived in the biggest, most impressive national parks in the world, working a job she loved. She chaperoned baby sea turtles on their journey to sea. She pursued bad guys on her galloping patrol horse. She jumped into rescue helicopters bound for the heart of the Grand Canyon. She won arguments with bears. She slept with a few too many rattlesnakes. Hell yeah, it was the best job in the world! Fortunately, Andrea survived it.