Ghost Adventures investigate Houghton Mansion, where a tragic accident and suicide still haunt the Massachusetts mansion.

The Ghost Adventures Crew investigate Moundsville Penitentiary in Moundsville, West Virginia. In 1995 the prison closed their doors for good. Though the prisoners are gone, they are not forgotten and by many accounts the ghosts of some 998 men who died still roam free.

Poveglia Island, off the coast of Venice, Italy, is one of the world's darkest epicenters. According to legend, the island was formed from the ashes of burned plague victims, criminals and mental patients who were exiled there.

Zak, Aaron, Billy and Jay travel to the Bell Witch Cave in a secluded area in Adams, Tennessee, where they will investigate the notorious legend of the Bell Witch that has plagued the Bell family and other families on the nearby farmland in 1817.

The Ghost Adventures Crew travels to Fayetteville, Tennessee to investigate the Old Lincoln County Hospital, a claimed powerhouse of paranormal activity.

Ghost Adventures investigates extraterrestrial activity in Rainbow Valley, Arizona.

Zak Bagans, Nick Groff, and Aaron Goodwin of the Ghost Adventures Crew (G.A.C.) embark on their quest of the supernatural with their paranormal investigation of Bobby Mackey's Music World in Wilder, Kentucky. With a history full of murder, suicide and satanic cult activity, this nightclub has become known as "Hell's Gate."

The Ghost Adventures Crew sets sail to Port Townsend, Washington to investigate the claims of violent hauntings at Manresa Castle. During the lockdown, an entity mimics and torments Aaron.

The Ghost Adventures Crew travels to the remote desert outside of Peach Springs, Arizona for their lockdown at the Grand Canyon Caverns, a sacred Indian burial site.

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Zak, Nick and Aaron head to a Texas inn built on a 150-yr-old battleground.

Zak and Aaron witness a spirit operate on Nick in a hospital in Sonora, CA.

Zak, Nick and Aaron help homeowners scared out of their Victorian mansion.

Zak, Nick and Aaron travel to Goodsprings Nevada to see a 100-yr-old saloon.

Zak, Nick and Aaron investigate dark and ominous prison cells in Missouri.

Zak, Nick and Aaron engage in a suspenseful 3-part lockdown in Santa Ana.

Zak, Nick & Aaron's 100th episode takes them to the original Exorcist House.

Zak, Nick and Aaron get their chance to investigate the Alcatraz prison.

The GA crew investigate the odd paranormal events at a modern-day brothel.

The Ghost Adventures team travels to West Palm Beach, FL, to investigate the Riddle House. Built in 1905 formerly called The Gatekeepers Cottage, the Riddle House was used as a funeral parlor and home to cemetery caretakers. Later it was used as a private residence. The house was moved from its original location, Acacia Rd, West Palm Beach, Florida. This seemed to have upset the spirits causing paranormal activity due to the house having seen its share of death and tragedy.

Zak leads the team to Birmingham, AL, to investigate Sloss Furnaces. Built in 1881, this factory was a dangerous place to work. Many workers died and many more were injured. It's the souls of these workers that are believed to inhabit and haunt the factory.

Zak, Nick and Aaron go to New Jersey to investigate an abandoned psychiatric hospital. This hospital once housed thousands of mentally ill patients, many of whom died due to poor conditions. Witnesses have reported disembodied voices and dark shadows there.

The Ghost Adventures team travels to Scotland to investigate the Edinburgh Vaults. The city is steeped in history and hauntings, but no landmark holds as many ghosts as the rooms and passageways under South Bridge.

The Ghost Adventures team heads to Boise to investigate the Old Idaho Penitentiary. The prison once housed killers destined for the gallows, and even though the criminals may be gone, their spirits remain locked behind the high stone walls of the prison.

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.