Zak and the guys relive the spine-tingling events from their controversial investigation of the infamous Annabelle doll. This allegedly demonic doll's history is so terrifying it inspired a horror movie franchise.

The crew digs deeper into their investigation of the Reseda House of Evil.

Zak and the guys relive their emotionally charged attempt to bring closure to a grieving mother who lost her son to suicide. During the crew's investigation a psychic medium confirms suspicions there may also be a malevolent presence in the home.

Zak and the rest of the team fight against a generation demon and save the haunted family’s soul.

For the first time ever, Zak discusses the most terrifying moment of his life that occurred during the crew's investigation of two Civil War-era buildings which have been hot spots for anguish and blood. To this day, Zak cannot shake his fear.

Zak and the guys revisit their intense investigation of a mountaintop campsite in Utah where a ghastly hostage incident took place in 1997. Many believe hellhounds and dark entities bring out the worst in those who dare to tread its cursed grounds.

Zak and the guys share laughs as they revisit their investigation of the Stone Lion Inn, which at the time was no fun and games. Not only were they surrounded by poltergeist activity, they captured one of their most incredible pieces of audio evidence.

Sometimes little girls are not made of sugar and spice and everything nice. Zak and the guys look back at their investigations the Sallie House in Atchison, Kansas, a place infested with a demonic spirit pretending to be a little girl.

The guys look back at their investigation of the Westerfeld House.

Zak and the guys look back at their investigation of the Domes, an Arizona landmark plagued by dark rituals and evil entities. The crew suspects supernatural interference when they simultaneously experience technical difficulties during the screening.

Zak and the guys look back at their investigation of San Haven Sanatorium, a once-sacred land infused with death, despair and a dark energy that overcomes all who step onto the property.

Zak and the guys look back on their investigation of Kay's Hollow, a former monument plagued by dark rituals and the spirits of twisted cult members.

Zac and the guys revisit their investigation of the world-famous comedy club; fear and laughter go hand in hand as the crew encounters a paranormal energy unlike any other at the iconic LA hot spot.

Zak and the guys look back at their investigation of a Utah mansion soaked in tragedy and bloodshed; the historic home is charged with so much negative energy that the crew fears it may be a portal to hell.

The guys don their Hawaiian shirts and break out the ukulele as they look back at their investigation of Catalina Island; Zak and the crew are excited to relive one of their greatest captures to date on this haunted island off the coast of LA.

Zak and the guys give an inside look at what it takes to investigate a demonic home invasion as they revisit a terrifying case in Nevada; moved by a family's pleas for help, the crew works fast to uncover the dark source of their invisible attacker.

Zak and the guys look back at their historic investigation of a mysterious canyon located in the Four Corners region of New Mexico; the crew recalls how they were unknowingly drugged while chasing down skinwalkers in the desert.

Zak and the guys look back at an extremely disturbing investigation of a family home in suburban California; strong demonic activity and a satanic message sent through a child's toy makes this one of the most intense lockdowns for the crew.

Aaron decides to take the guys back to their Wild West adventure in a California mining town; Zak and the crew brave a treacherous cliffside trail to confront the lost souls that haunt this secluded settlement.

Zak and the guys revisit one of their top pieces of poltergeist activity ever captured on camera when they look back at their investigation of satanic activity in a Texas hotel.

Zak and the guys revisit a case that hit a little too close to home when they answered a desperate call for help from Aarons's dad, Don; the crew worries for Don's safety as they confront the dark spirits that lurk inside his Las Vegas home.

Zak and the guys revisit their investigation of an abandoned Washington hospital teeming with dark, aggressive energy; the crew must stick together as they navigate the haunted corridors of the run-down building.

Zak and the guys recall their unique investigation of a Utah pizzeria plagued by an evil witch's curse; the crew gets a violent response when they try to draw out a demonic entity in the basement.

Zak and the guys revisit their intense investigation of a shuttered juvenile detention center in California; the crew questions whether to continue their dark mission as they confront the lost souls imprisoned within these walls.