The crew travels to Arizona to investigate The Slaughter House, a meatpacking plant-turned-haunted attraction. Rapper Post Malone joins the lockdown and Zak is affected by dark energy, leading to a marathon of paranormal activity.

The crew investigates an abandoned Arizona hospital where the caretaker is being choked by a dark presence. A strange conflict arises between Zak and Aaron after objects are thrown at the guys and a violent threat is captured on EVP.

Zak and the crew travel to Las Vegas to help a family plagued by a demonic force in their home. The brother and his siblings believe this entity not only attached itself to their mother, but it is also responsible for her death.

Zak and the crew travel to the small mining town of Eureka, Nevada, to investigate reports of an aggressive spirit at a hotel as well as a mysterious underground tunnel system built by oppressed Chinese.

The crew travels to Oregon to investigate the mysterious Wolf Creek Inn, a historic building riddled with aggressive negative energy, apparitions and a vampire-like creature. During the lockdown, Aaron experiences a dramatic psychological breakdown.

Zak and the crew investigate the massive Titanic Museum in Branson, Missouri. Employees believe the spirits of the 1,496 people who lost their lives on April 14, 1912, have found their way to the museum dedicated to their memory.

Zak and the crew travel to Springfield, Missouri, to investigate the ominous Pythian Castle. Once plagued by torture and suicide, this historic building is infected with violent spirits who seem to mimic the living and deliver fatal premonitions.

Zak and the crew head to a Colorado museum where something is threatening the health of its employees. During the investigation, they uncover the property's violent history and gather disturbing evidence of a dangerous entity.

Zak and the crew head to Idaho to investigate the Albion State Normal School, where dark energy from satanic graffiti is affecting its staff. During the lockdown, Jay and others are aggressively marked with strange symbols behind their ears.

In the second half of the two-part special, Bagans invites three lucky fans to the museum to further investigate the dark entities. Then, Bagans ups the fear factor with the arrival of the famously haunted doll, Annabelle, who comes with very strict rules: no physical handling, no provoking and a quart of holy water must be on standby in case of possession.

Zak Bagans has opened a Haunted Museum in downtown Las Vegas, housing his collection of haunted and cursed objects. With several new items on hand, Bagans calls on experts from previous "Ghost Adventures" investigations to tap into the energies within each object.

Zak and the crew continue their Civil War investigation with the Battle of Champion Hill. Zak digs deep into the historic soil, which was the site of 6,000 casualties, and follows the trail of evil extending into the surrounding forest.

Zak and the crew uncover dangerous paranormal activity at two abandoned locations in Civil War-scarred Vicksburg, Mississippi. First, a former Elks Lodge where an unsolved murder occurred. Then, a hospital with a history of disease and death.

Zak and the crew continue their exploration of Vicksburg, MS, by investigating a demonic presence at a hair salon that was hit by cannon fire during the Civil War. They also investigate an antique doll museum said to contain dolls that come alive.

Zak and the crew are called upon by the mayor of Vicksburg, Mississippi, to explore the Siege of Vicksburg and it's lasting impact on the city. Their first stop is McRaven Mansion, widely considered to be the most haunted building in the South.

Zak and the crew travel to Ogden, Utah, to help a family plagued by a demonic figure that appears as a beautiful red-headed girl.

The crew travels to a sinister ghost town near Wolf Creek, Ore.; an aggressive entity overtakes Zak; a dark force incapacitates Aaron; eerie figures; a voice warns of a demonic presence.