Hoping to reconnect with his troubled teenage daughter, a recently widowed father unsuspectingly brings home a dollhouse that contains a terrible secret.

Jack and Katrina visit a mansion in Denver. Plagued by bad luck and a string of untimely deaths, some believe that it has a portal to the netherworld.

In Siberia, Josh Gates investigates the strange and brutal cold case of the Dyatlov Pass Incident, where nine Soviet hikers died suspiciously in 1959.

The team travels to Vietnam in search of the Wildman, a bi-pedal ape similar to Bigfoot in its ability to elude man. But will they be able to locate it?

A man on a night-time snowmobile ride suddenly feels something has been implanted in his leg. And, an otherworldly beast stalks a family over three generations.

Strange men in black suits knock on the door of a UFO witness after an eerie light show. A woman is terrorized by small humanoid creatures that only she can see.

The team head to Michigan to answer a call from a woman who claims a Bigfoot threw a log at her moving car. Could this be their most successful mission yet?

The team travels to Vermont to investigate a photo of what may be a Sasquatch carrying her baby. They take to the forest in hopes of finding evidence themselves.

Andrew heads south to explore Louisiana's Cajun country. He dines on blood sausage, feral hog meat and crab, as well as chewy ginger cakes and seafood gumbo.

Andrew heads to one of the world's culinary capitals. In Paris, he eats mushrooms and learns about the dying art of aging artisanal French cheese.

Rich's build is down to two workers, which will make it difficult to reach their target. Plus, Creig's build is fraught with costly miscalculations.

Remote building often means no machines. But that's no problem as Rich's team uses brute strength to muscle up the 800-pound mainframe beam.

Joe Donovan, an avid skier and adventurer, has found the perfect spot for his permanent base camp on a remote ridge in southwest Montana.

Deep in the backwoods of South Dakota, off-grid builder Jared Capp sets out to turn four shipping containers into a two-storey mountain hideaway.

In 1976, Hans helped a family who were terrified by the spirit of a grieving widow. The team visit Port Clyde to investigate a resurgence in paranormal activity.

In 1968, Hans feared possession at the hands of a powerful entity. The team travel to Waterford, Maine, to confront this dark presence.

The team investigates reports of poltergeist activity at a decommissioned prison in New York. They call for backup when blueprints reveal how big the property is.

Four new team members join Jason, Steve, Dave and Shari on their investigation of the Mid-Orange Correctional Facility in Warwick, New York.

Josh heads to Florida chasing the long-lost treasure of pirate Jose Gaspar. He joins marine archaeologists and treasure hunters in the search.

Nick and Katrina explore uncharted territory in the haunted Old Chatham County Jail in Savannah, and are hit by phantom noises in their 72-hour confinement.

Nick, Katrina and fellow enthusiast, Aaron Sagers, recount their 72-hour investigations with unseen footage and in-depth evidence analysis.

After a potential new breakthrough, Josh returns to Guatemala, searching for a snake king tomb. Using new technology, he hopes to find the tomb's location.

The guys are in Middletown, Ohio to investigate an abandoned elementary school. Is its chilling paranormal activity connected to a tragic train crash?