Nearly a year after being forced out of Washington State by wildfires, the team reviews their previous investigation into the existence of Bigfoot. They reveal startling new evidence and get insight from legendary primatologist Dr. Jane Goodall.

Deep in the Northern California wilderness, Russell stops at nothing to reach a nesting site while Mireya and Bryce uncover evidence that a family of Bigfoot is nearby. Meanwhile, Ben speaks with a witness who had a chilling encounter with Bigfoot

The team returns to the Olympic Peninsula with a plan to lure out a Bigfoot by releasing primate pheromones. But after Ronny and Mireya see something watching them, and Russell is blindsided, it becomes clear -- the hunters are now the hunted.

Russell finds fresh clues along an abandoned railroad track, while Ronny and Mireya experience a hotbed of unexplained sounds deep in the forest. Bryce learns chilling new information about the history of Bigfoot in Northern California.

Russell uses an unlikely ally to pursue a strange predator, while Bryce investigates the team's recent run-ins with mysterious floating orbs. After an invasion of their base camp, Ronny and Mireya use modern means to track a creature in the woods.

Deep in a Kentucky hollow, Mireya and Ronny encounter several unidentified creatures responding to Bryce's recording of a Bigfoot howl. Their investigation of an old mining road uncovers an enormous footprint, confirming they are on the right track.

The team has a truly shocking sighting, only to see their best lead yet lead slip through their fingers. But a groundbreaking tip leads Bryce to wrap up their expedition in Washington State and relocate to a new Bigfoot hot spot.

An elite team of specialists use an advanced data algorithm to pinpoint when and where to encounter Bigfoot. Armed with the latest technology, they venture into the unforgiving forests of central Oregon in search of the elusive beast.

With just three days left in the Kentucky expedition, the team investigates a strange tree structure that could be key to proving the existence of Bigfoot. A bloodhound tracker leads them further up Pine Mountain and to a mysterious cave entrance.

A mysterious shadow figure gets too close for Ronny and Mireya's comfort. Russell tracks a large creature along a well-used game trail but quickly realizes he's being stalked in return. Bryce makes an unsettling discovery at the bottom of a lake.

Mireya’s darkest nightmare comes true. Russell investigates a possible Bigfoot underwater passageway. Bryce secures an airship to survey the final square miles for Bigfoot's heat signature.

Strange unmarked helicopters stalk the team through the Olympic Peninsula.

Russell tracks a massive creature to a box river canyon but finds he can't escape a shadowy figure on the prowl. Bryce discovers Bigfoot is lured in by whistling, while Ronny and Mireya realize something is watching them from across their base camp.

The investigation reaches a fever pitch as the team uncovers a potential Bigfoot kill zone directly above Lake Fear. Thrilled by their findings, they launch a squadron of patrol drones to sweep the area for definitive proof of the existence of Sasquatch.

The team ascends massive pine trees in search of evidence from above. Bryce uncovers government secrets that may include underground bunkers. A 3D image specialist discovers possible man-made structures deep in the forest and captures a ghostly image.

After Russell records thermal imagery he's convinced is Bigfoot, Bryce hurries to have the footage analyzed by experts. The evidence is staggering. Mireya and Ronny have a terrifying experience when they realize they're not alone in the forest.

The expedition takes an intriguing turn when Bryce comes across a photograph of a human-like hand with claws. Ronny and Mireya use never-before-seen tech to narrow down their search after a piece of potential evidence washes away in a thunderstorm.

The team explores a new target zone in the Bigfoot capital of the world.

Bryce enlists a hypnotist to unlock the memories of a Bigfoot witness.

Ronny, Mireya and Bryce search for a top-secret government research facility hidden beneath the forest, and a witness comes forward with his up-close encounter with Bigfoot. Meanwhile, Russell is unnerved by a gruesome discovery.

With one team member down, Russell and Mireya head back into the forest to hunt down their leads; their intense investigation uncovers their first pieces of possible Bigfoot evidence.

After receiving a recording of an alleged Bigfoot call, Bryce blasts the howl over a speaker to elicit a response. With Russell positioned high on a hill and Ronny and Mireya down in the valley below, the team may get the encounter they're looking for.

The team investigates strange reports of Bigfoot turning invisible.

Using new tracking technology, Russell gets closer to his quarry than ever before. Bryce learns that Bigfoot may have psychic powers, leading Ronny to use an unusual technique to draw one out. And Mireya is startled by strange lights in the night.

As Bryce works with Jeff Meldrum to analyze the hair sample, Russell discovers a structure he believes is a Bigfoot nest; new team member Ronny joins Mireya in a race to the nest to collect DNA samples that will break open the investigation.