Zak, Nick, and Aaron head to Los Angeles, California to investigate the Oman House, a home riddled with paranormal activity believed to be directly linked to the Manson Murders of 1969 that killed Sharon Tate. The crew also discovers that the home was built upon Native American burial grounds.

The GAC head to Louisiana in search of the spirits that reside at the Myrtles Plantation, one of hundreds of plantations in Louisiana from the slavery years. It is believed that there have been 10 murders at the location which is renowned to be one of the most likely places to see an apparition in the world.

Zak, Nick and Aaron investigate two New York sites: A mansion rumored to be haunted by the ghost of George Washington, and a bar where security camera footage reveals glasses spontaneously flying off shelves.

Zak, Nick and Aaron head to a 100-year-old cement factory that's been turned into a Halloween attraction in Salt Lake City, UT. The guys are shocked to hear that employees recite from a satanic bible, causing all sorts of aggressive and demonic paranormal activity. The location is even more eerie in the fact that it holds the address of 666.

GAC travel to rural Indiana for their lockdown at Fox Hollow Farm, a beautiful mansion on a farm where serial killer Herb Baumeister targeted gay men, luring them back to his pool room and killing up to 19 men by erotic asphyxiation in the mid-1990s. Although eleven of these deaths were identified on the premises, eight still remain a mystery. The guys also venture into the back woods where hundreds of the bones of his victims were found by investigators in June of 1996.

GAC visit the historic St. James Hotel in Cimarron, where many famous people from the Old West, including Jesse James, Wyatt Earp and Annie Oakley, have stayed over the years. During their lockdown, the guys investigate reports of an ill-tempered spirit in Room 18, which is padlocked shut and off-limits to guests.

The guys visit Pioche, Nev., an 1860s silver-mining town that has maintained much of its Old West character. During their stay, they investigate the historic Overland Hotel and Saloon, and the Million Dollar Courthouse and Jail.

GAC travel to Ohio for their lockdown at the Old Licking County Jail, where multiple murders of famous criminals, inmate suicides and the deaths of four sheriffs were the norm. Also during their trip, they investigate a local paranormal investigator's nearby house who said she captured a photo of a dark shadow apparition named "Davey" who became attached to her back at the jail and then followed her home.

The GAC travel to Montana to investigate the Hotel Meade. While investigating, they expand the scope of their investigation to include more areas; including the crying baby houses, the saloon, the church house, and the schoolhouse.

GAC travel back in time to the Heritage Junction. Spirits include those of a woman seen on the second floor of the Newhall Ranch House and a young boy named Timmy who's voice was captured on an EVP calling for "Linda".

Zak, Nick and Aaron travel to the historic city of Savannah for their lockdown at the haunted Sorrel Weed House, the infamous antebellum-style home built in 1839 as well as the Gribble House, where a triple-murder took place in 1909.

The guys head to San Pedro, CA, to investigate the Fort MacArthur Military Museum, the site of many claims of paranormal activity believed to be caused by UFOs. Built in 1914, this coastal defense battery was put to the test after Pearl Harbor when they fired almost 1,500 rounds of ammunition at what they believed was an air invasion.

The guys head back to the west coast for their lockdown at the infamous Whaley House of Old Town, San Diego, one of the most haunted houses in America due to its numerous spirits haunting the home, including a ghost named "Yankee Jim".