Zak revisits his investigations of the Stanley Hotel and Pennhurst. Zak hears about a woman suffering from a spiritual attachment originating from the dark and dangerous energy emanating from the Stanley Hotel.

Zak talked to Mike Henson about the evidence GAC captured back in 2011 (Season 4). Also, a small clip about a spirit named "Doug", was shown as well. However, some time after that GA investigation, it seems that some locals did not liked the idea of having outsiders poking around inside the hospital at night. In an alleged reprisal against Mike, someone poisoned and killed his pet donkey, Spirit, with an unknown substance. Before that incident and after the GA investigation, there were a few break-ins at the site. According to Bryan Bernier, he thinks that Mike is ...

Zak Bagans learns that his investigation of the Zozo Demon house transformed a former homeowner into a criminal. The owner of Katie's Bar in New York confides in Zak, fearing that the spirit plaguing the bar has followed him back home.

Zak helps a young filmmaker, and survivor of a brutal attack, who has become obsessed with spirits that allegedly haunt a hotel in Seguin, Texas. And later, he gathers compelling evidence of a possession at Birmingham's Sloss Furnaces.

Zak returns to the Moon River Brewing Company in Savannah and Alcatraz in San Francisco.

Zak revisits his investigations of the Sallie House and The St. James Hotel. Zak learns how Gary and Jan Reynolds lives took a dark turn after meeting during Zak's investigation of The St. James Hotel.

Zak reviewed some previous evidence from the GA's Season 7 (2012) investigation of the Palmer House Hotel. However, the owner of the hotel did not reveal to GA about a crucial piece of evidence that only she knew at the time. It was about Sinclair Lewis, the first American to be awarded the Nobel Prize in Literature in 1930, was an on-and-off employee of the hotel in the past. According to the owner, she was confronted by the spirit of Sinclair Lewis, telling her that he hid one of his manuscripts in the basement walls of the hotel. If this rumor is true, it would ...

Zak Bagans reopens investigations of Bonnie Springs Ranch and Vulture Mine. Zak watches an intense home video of a tour guide at Bonnie Springs become possessed, and he receives sad news about the Vulture Mine's fate.

In the series premiere, Zak Bagans relives old evidence from the Ghost Adventures Crew's (GAC) three visits to Bobby Mackey's Music World in Wilder, Kentucky. He states that it is one of the places he and his crew will never investigate again. Bobby Mackey's Music World interviewees: Bobby Mackey, Wanda Kay, Missy Bostrom, and Matt Coates.[2] The Brookdale Lodge, a former Grover Lumber Mill site that was reconstructed to become a resort in Brookdale, California. Brookdale Lodge interviewees: Denise Dalton and Marina Marazzo.

Zak Bagans revisits the audio and video evidence, from GAC's visit to the Villisca Axe Murder House in Villisca, Iowa. It is the home of the Axe Murders of 1912. Villisca Axe Murder House interviewees: Patty Williamson, Linda Cloud, and Katie Savick.[3] Zak relives the GAC's 2011 lockdown of Letchworth Village, an abandoned residential institution in Haverstraw, New York. Letchworth Village interviewees: David Skala and Sara Bogart.

Zak reopens past investigations of the Riddle House & Pioneer Saloon.

Mysterious health issues have plagued Zak's guests since his investigations of the Exorcist House and the Ohio State Reformatory. Both guests strongly believe that their attachment to demonic spirits has led to strokes and heart attacks.

Zak revisits investigations at Apache Junction & the Fear Factory. One family tells Zak a spirit haunts their home, and their autistic son is the only one who can effectively communicate with the spirit.

Zak reopens investigations when he visits the reportedly haunted Myrtles Plantation in Louisiana and the Old Licking County Jail in Ohio.