Chaos follows Zak and the crew as they cross the San Francisco Bay to investigate the deceptively named Angel Island. Once home to an immigration station with a notorious history of torture and despair, the guys face residual anger and ecstasy emanating from a demonic darkness.

Zak and the crew descend upon a Southern California park to investigate a preschool haunted by tragedy and violent deaths. The team wants to determine if an ancient tribal tale of vengeance has continued to cast a dark curse on this former homestead.

Zak and the crew are called to Tempe, Arizona, to investigate a brewery awash with dark and disturbing paranormal activity. The team lands in the crosshairs of dueling entities as they dig deep into the colossal factory's troubled past.

The crew investigates reports of vicious paranormal attacks at LA's Heritage Square Museum; as the team explores this collection of Victorian homes, they suspect a dark portal is responsible for shadow figure sightings and poltergeist activity.

The crew visits King Gillette Ranch, a sprawling compound built on sacred land. Its dark history plus a brush with a cult has birthed violent spirit activity that drains the living of their energy, making this the GAC's heaviest investigation yet.

Zak and the crew visit the King Gillette Ranch, a sprawling compound built on sacred land. Its dark history plus a brush with a religious cult has birthed violent spirit activity that drains the living of their energy, making this the GAC's heaviest investigation yet..

The crew peels back the glamorous façade of a Phoenix, Ariz., hotel to expose a darkness that's said to drive people mad; the team encounters a demonic presence that could be responsible for countless deaths on the property.

Zak and the crew venture to California's first oil boomtown to investigate reports of ghostly activity inside its buildings and glowing anomalies in the surrounding hills; chaos ensues as the guys attempt to unravel the mystery of Mentryville.

Echoes of a past investigation come into focus as Zak and the crew investigate a stately California ranch steeped in tragedy. A dark energy has taken root on the land, and the team must unravel its haunting secrets to help the terrified caretakers.

Zak and the crew check in for a night of terror at a Flagstaff, Arizona, hotel where guests and staff have reported troubling paranormal experiences for decades. The chaotic spirits trapped within are wreaking havoc, and the GAC may be the only ones who can help.

The crew pierces the seal on California's Mira Loma Detention Center; decades of death, violence and bloodshed have scarred this massive compound, painting a thick layer of doom on every square inch and delivering some of the most solid evidence yet.

Zak and the crew return to LA's Skid Row district to investigate a nearly abandoned building steeped in a dark, grisly history that rivals the Hotel Cecil; the guys have their hands full as both the dead and the living push back on the investigation.

Zak and the crew comb the receding shores of Nevada's legendary Lake Mead for clues about its deadly past. As the reservoir rapidly dries out, dark secrets rise to the surface. Is a curse behind the tortured energy emanating from the brilliant blue waters?