Zak and the crew delve into the darkness that surrounds the historic and very haunted town of Sutro, Nevada. The team suspects an old mining tunnel is fueling the abandoned settlement's ominous aura as they uncover numerous deaths, disasters and mysterious fires.

Zak and the crew brave a brutal winter blizzard to confront an aggressive presence at an abandoned ranch located off the coast of Utah's Great Salt Lake. Unmarked graves and whispers of a curse throw a shadow over the investigation as the guys seek out the dark, unseeable force.

Zak and the crew trek through California's Death Valley to investigate a sprawling complex shrouded in mystery. The guys find themselves captivated by the desert villa's dark, powerful energy as they explore its flood- and fire-ravaged grounds. Who or what is feeding this ominous aura?

Zak and the crew suspect evil forces are afoot as they investigate a California estate haunted by rumors of secret rituals in the basement and a gruesome double homicide next door. The team treads on very dark grounds as they attempt to unravel the mystery.