Zak, Nick and Aaron are off to Ione, CA, to investigate Preston Castle -- a reformatory that once housed juvenile offenders and abandoned children. Its dark history includes an unsolved murder, countless instances of corporal punishment and many tragic deaths.

The crew heads to St. Augustine, FL, to investigate a Spanish fort. More than 300 years after it was built in America's oldest city, Castillo de San Marcos is still defended by the spirits of soldiers and haunted by the prisoners once locked inside.

Zak and the team investigate paranormal occurrences at La Purisima Mission in Lompoc, CA. The former Spanish residence of padres, soldiers and the native Chumash is beautiful, but the air around it is heavy with the tragedy of disease and war.

Zak, Nick and Aaron head to Natchitoches, LA, to investigate the Magnolia Plantation. Many slaves labored and died at this cotton plantation, which was built in 1830. The crew looks for evidence of voodoo rituals slaves may have used to seek revenge on the owners.

Ghost Adventures confronts the spirits of the Old West in Tombstone, AZ. The Bird Cage Theater embodied the heyday of the silver boom. Legendary gunslingers, gamblers and prostitutes drank and died in the theater, and some even stayed to haunt it.

The team goes to Philadelphia to investigate the abandoned Eastern State Penitentiary. Driven insane by solitary confinement, torture and disease, the inmates suffered an ugly and violent existence. Their angry spirits continue to roam the corridors.

Zak, Nick and Aaron visit Savannah, GA, to investigate the Moon River Brewing Company. The building survived General Tecumseh Sherman and has seen its share of feuds, fights and lynchings. Today a ghost named Toby haunts the billiard room and other spirits lurk.

The Ghost Adventures team travels to England to investigate the Ancient Ram Inn. Built around 1145, its long dark history includes a pagan burial ground, ritual sacrifices of children and a possible connection to Stonehenge.

Zak, Nick and Aaron confront the demonic spirits of the Ashmore Estates.

Zak, Nick and Aaron head to Tonapah, NV, to explore the Mizpah Hotel.

Zak, Nick and Aaron enter into a multipart lockdown in Old Town San Diego.

The guys conduct a paranormal experiment at Winchester Mystery House.

The guys investigate the infamous axe murders at the Lizzie Borden House.

The guys explore an abandoned mental institution complex in upstate NY.

Zak, Nick and Aaron return to the city where they captured some of their most compelling paranormal evidence. On this visit, they investigate three locations: the St Mary's Art Center, the Silver Queen Hotel, and the Miner's Cabin at the Gold Hill Hotel.

The crew investigates Rocky Point Manor and a Civil War battlefield.

Zak, Nick and Aaron embark on a two-part lockdown on the island of Jamaica, which includes an exploration of the Rose Hall's infamous White Witch and the never-before-investigated home of Johnny Cash.

Zak, Nick, and Aaron investigate an old jail in Charleston, South Carolina. During its 137 years in operation, the Old Charleston Jail held within its stone walls some of the city's most notorious convicts. Some have been vindicated by history; others are remembered as monsters. For a few, their guilt or innocence remains a mystery.

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.

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.

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 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".

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.