Facing his deepest fears, Cliff is in Hawaii in search of the terrifying Night Marchers-the ghosts of long-dead warriors who are said to manifest in human form.

The Brown Mountain Lights of North Carolina are one of the greatest mysteries on the continent, and Cliff is on an eerie recon mission to find out more.

In the heart of the Louisiana bayou, Cliff navigates the biggest baddest swamp in America in search of a shapeshifting monster known as the Rougarou.

Cliff heads to the sprawling Pine Barrens of New Jersey to track down the mythical Jersey Devil-a terrifying creature with bat wings, a long tail, and a horse's head.

In the haunting and inhospitable desert of Southern California, Cliff is in search of the infamous Mojave Sandman-a hairy ape-like creature also known as the Yeti, Sasquatch, and Bigfoot.