The investigation launches into high gear as the team discovers evidence that could prove Bigfoot’s existence once and for all. When uncontrolled wildfires erupt in Washington, it’s a race against time to find the truth before it burns away.

After coming closer than ever to proving the existence of Bigfoot in Oregon, the team continues their search in the mountains of Kentucky. They'll spend the next two and a half weeks in search of Sasquatch -- unless it finds them first.

The team discovers a Kentucky cave system that may be Bigfoot's lair.

The team treads on dangerous ground as it scopes out a Bigfoot hideout.

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.

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.

Strange unmarked helicopters stalk the team through the Olympic Peninsula.

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.

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.