All Episodes 2009 - 2021

Zak, Nick, and Aaron spend seven hours locked inside Weston, West Virginia's Trans-Allegheny Lunatic Asylum, a former psychiatric hospital claimed to be one of the country's most haunted locations.

This special features investigative highlights from the GAC's lockdown inside the Trans-Allegheny Lunatic Asylum.

The crew gets locked inside the Trans-Allegheny Lunatic Asylum in Weston, West Virginia, and goes behind-the-scenes of their most infamous lockdown yet.

This special is a re-edited, extended version of GAC's previous investigation on the small Italian island of Poveglia.

From their headquarters in Las Vegas, Nevada, Zak, Nick, and Aaron present some of the best evidence captured in previous episodes.

The GAC discuss their scariest experiences throughout the seasons while investigating during their lockdowns.

The crew checks themselves into a room in Longfellow's Wayside Inn where it is claimed the ghost of Jerusha Howe is to be waiting for her lover to return from across the sea.

While at Zak's house in his "dungeon" room, the Ghost Adventures Crew recall some of their spookiest encounters during their season 5 lockdowns in various haunted hotels and hospitals in their travels across the country. "Horror Hotels" includes the Stanley Hotel, Mizpah Hotel, Goldfield Hotel, the Cosmopolitan Hotel in San Diego, Jerome Grand Hotel, and the Silver Queen Hotel. "Deadliest Hospitals" includes St. Mary's Art Center, Ashmore Estates, and Letchworth Village.

Zak, Nick, and Aaron remember their most terrifying ghostly encounters with female entities, haunted houses, and battlefields they encountered all during their Season 5 lockdowns. "Wickedest Women" includes Lizzie Borden of the Lizzie Borden House, Bridget Bishop of The Witch House, and Lavinia Fisher of Old Charleston Jail. "Houses of Terror" includes Villisca Axe Murder House, Winchester Mystery House, Loretta Lynn Plantation House, Maysville Slave House, Rocky Point Manor, and the Jennie Wade House. "Bloodiest Battlefields" includes Perryville Battlefield, Gettysburg Battlefield and Old Fort Eric.

The GAC travel to West Wycombe, thirty miles outside London, England, where they explore the infamous Hellfire Caves and seek to conjure up the spirits of 18th century royalty (Sir Francis Dashwood and Paul Whitehead) who are said to still dwell there by performing an ancient and secret pagan ritual with special guest "Lady Snake" who previously appeared in the Ancient Ram Inn episode.

The guys are in Gillingham, Kent, England, just southeast of London, hunkering down inside Fort Horsted, an old World War II fort built on ancient Anglo-Saxon land. Then the guys recruit locals to conduct a séance to provoke the demonic spirits that terrify visitors in what they call the "Demon Area" of the tunnel at the fort.

The GAC showcase the most disturbing prisons and detention centers in the country. With a history of hangings, murders, electrocutions and suicides, these facilities have turned into spiritual battlegrounds. Locations featured are Moundsville Penitentiary in Moundsville, West Virginia; Idaho State Penitentiary in Boise, Idaho; Preston Castle in Ione, California; Eastern State Penitentiary in Philadelphia, Pennsylvania; Ohio State Reformatory in Mansfield, Ohio; Old Charleston Jail in Charleston, South Carolina; and Central Unit Prison in Sugar Land, Texas.

Zak, Nick, and Aaron recap their previous investigations of haunted frontier and ghost towns in Arizona, California, and Nevada that are in existence since the days of the American Wild West. Locations featured are the Birdcage Theater in Tombstone, Arizona, and the Stonehouse Brewery in Nevada City, California.

The crew recall their most frightening investigations of paranormal activity at various hospitals, sanitariums and asylums where violent deaths, mistreatment and abuse took place. Locations featured are Pennhurst State School in Spring City, Pennsylvania, Yorktown Memorial Hospital in Yorktown, Texas; Ashmore Estates in Ashmore, Illinois; Northern New Jersey Asylum in Cedar Grove, New Jersey; Waverly Hills Sanatorium in Louisville, Kentucky; Linda Vista Community Hospital in Los Angeles, California; Letchworth Village in Haverstraw, New York; Rolling Hills Asylum in East Bethany, New York; and Tooele Hospital in Tooele, Utah.

The guys remember the spirits in their previous lockdowns at the most haunted bars, restaurants, and nightclubs. Locations featured are Bobby Mackey's Music World in Wilder, Kentucky; Old Washoe Club in Virginia City, Nevada; Kell's Irish Pub in Seattle, Washington; Moon River Brewing Company in Savannah, Georgia; Lyceum Restaurant in Salem, Massachusetts; and Excalibur Nightclub in Chicago, Illinois.

Zak, Nick, and Aaron recap all the ghostly guest during their lockdowns at various haunted hotels where murders, shootings and suicides had occurred. Locations featured are Stanley Hotel in Estes Park, Colorado; Longfellow's Wayside Inn in Sudbury, Massachusetts; Goldfield Hotel in Goldfield, Nevada; Amargosa Opera House in Death Valley Junction, California; Copper Queen Hotel and Oliver House in Bisbee, Arizona; The Palmer House (Sauk Centre) in Sauk Centre, Minnesota; Mizpah Hotel in Tonopah, Nevada; and Pico House in Los Angeles, California.

he Ghost Adventures Crew recall all of their ghost hunts that have taken place in homes that are said to be haunted. Locations feature are the Rose Hall Plantation and the Cinnamon Hill Plantation House, former home of Johnny Cash, both in Montego Bay, Saint James Parish, Jamaica; the Magnolia Lane Plantation in Natchitoches, Louisiana; the Ancient Ram Inn in Wotton-under-Edge, Gloucestershire, England; Prospect Place in Trinway, Ohio; Riddle House in Palm Beach, Florida; Wolfe Manor in Clovis, California; Winchester Mystery House in San Jose, California; and the Houghton Mansion in North Adams, Massachusetts.

The guys remember all their international lockdowns in the world's most sinister places. Locations featured are the Edinburgh Vaults in Edinburgh, Scotland; Rose Hall Great House in Montego Bay, Jamaica; Fort Horsted in Gillingham, England; Ancient Ram Inn in Gloucestershire, England; Poveglia Island in Venice, Italy; the Hellfire Caves in West Wycombe, England; and Fort Erie in Ontario, Canada.

Zak, Nick, and Aaron recap their underground lockdowns during their investigations in dungeons and tunnels. Locations featured are: Hellfire Caves in West Wycombe, England; Sacramento Tunnels in Sacramento, California; Pennhurst State School in Spring City, Pennsylvania; Shanghai Tunnels in Portland, Oregon; Gettysburg Orphanage (Soldier's National Museum) and Jennie Wade House in Gettysburg, Pennsylvania; Hill View Manor in New Castle, Pennsylvania; and Rolling Hills Asylum in East Bethany, New York.

GAC recall their most intense encounters and life-threatening moments with ghosts and spirits of all time during their lockdowns. Locations featured are the Poveglia Island in Venice, Italy; Maysville Slave House in Maysville, Kentucky; Preston Castle in Ione, California; Moon River Brewing Company in Savannah, Georgia; Magnolia Lane Plantation in Natchitoches, Louisiana; Fort Horsted in Gillingham, Kent, England and the Central Unit Prison in Sugar Land, Texas.

Zak, Nick and Aaron remember their past lockdowns that focus on ghosts and spirits with strong attachments to the people or places they left behind. Locations include the Ohio State Reformatory in Mansfield, Ohio, the Linda Vista Community Hospital in Los Angeles, California, the Villisca Axe Murder House in Villisca, Iowa, Letchworth Village in Haverstraw, New York, the Galka Family Home in Granby, Connecticut, Ashmore Estates in Ashmore, Illinois, and the West Virginia State Penitentiary in Moundsville, West Virginia.

GAC examine war-torn locations filled with the echoes of America's violent history. There is a unique form of shock, misery and terror attached to battlefields. When the fight is over, the suffering remains in the manifestation of spirits, some of whom are bold enough to summon the guys even closer. Locations include Remington Arms Factory in Bridgeport, Connecticut, Sloss Furnace in Birmingham, Alabama, Hales Bar Marina and Dam in Haletown, Tennessee, Fort Chaffee in Fort Smith, Arkansas, USS Hornet in Alameda, California, Execution Rocks Lighthouse in New Rochelle, New York, Castillo de San Marcos in St. Augustine, Florida and Rocky Point Manor in Harrodsburg, Kentucky, along with Perryville Battlefield in Perryville, Kentucky.

Over the years, Zak, Nick and Aaron have invited many guests to participate in some of their most memorable investigations. People and places include Mötley Crüe's Vince Neil and Bruce Westcott, Frank Sinatra's former pianist at the Riviera Hotel and Casino in Las Vegas, Nevada, The Hollywood Ghost Hunters, consisting of Kane Hodder, R.A. Mihailoff, and Rick McCallum at the Pico House in Los Angeles, California, Liz Nowicki at the Lizzie Borden House in Fall River, Massachusetts, Brendan Schaub at the Peabody-Whitehead Mansion in Denver, Colorado, Chad Lindberg at the Linda Vista Community Hospital in Los Angeles, California, Roy Marshall at the Villisca Axe Murder House in Villisca, Iowa, Christian Day at the Witch House in Salem, Massachusetts, Dakota and Rob Laden, the winners of the Ghost Adventures Crew Mashup Challenge, at the Old Charleston Jail in Charleston, South Carolina, Joe Tasso, Wally Luna, and Christy Silva at Bonnie Springs Ranch in Blue Diamond, Nevada.

Zak, Nick and Aaron look back at the series one hundred most memorable moments and investigations in celebration of the upcoming 100th episode. Also fans vote on their favorite funniest and scariest moments to see which moments are the winners of each episode.

In a two-hour Halloween special, GAC jet off to the mysterious country of Romania to their dream destination to Transylvania to follow in the footsteps of Vlad Tepes a.k.a. Dracula. Whilst in the Eastern European country, they split up and investigate three different locations. Nick and Aaron visit the ruins of Targoviste Castle where Vlad the Impaler lived up to his nickname impaling 200,000 of his enemies around the castle. Meanwhile, Zak travels to the notorious Hoia-Baciu Forest known for its extraterrestrial/supernatural/paranormal manifestations in which he and audio tech Billy journey deeper into the "Devil's Heart", a circular clearing where no trees grow and light anomalies appear. Lastly, the guys meet up for their lockdown in Hunedoara Castle, known as Dracula's Castle where he was imprisoned.

Zak heads to Paris, where he learns from locals that the dead are buried just beneath the streets. To be exact, 65 feet below in a massive maze of tunnels. His mission is to learn everything he can about the culture, the history, and the mysteries of Paris' Catacombs, especially if it relates to the afterlife.

GAC travel to the mystical country of Ireland to investigate locations steeped with demonic activity, while also covering the origins of Halloween. To start their Irish adventure, they begin with a trip to the cave at Rathcroghan; the birthplace of Samhain. Nick and Billy investigate the Leap Castle north of Roscrea in Clareen, Ireland's most haunted castle, to look for the "elemental", Zak, Aaron, and Jay investigate the Hell-Fire Club Lodge, on Montpelier Hill. They learn about the stories of Satan visiting the premises and the mythological creatures of Massy Woods, including a banshee. Next, they hear the legend of the Black Cat of Killakee that haunts the Stewards House which sits at the bottom of the hill. The guys regroup to for their journey south in County Wexford for their lockdown in Loftus Hall, Ireland's most haunted house, outside of Duncannon, where the devil is believed to have stayed the night.

GAC travel to the legendary Wild West town of Deadwood, in South Dakota's Black Hills to investigate its most haunted locations, where the spirits of cowboys and gunslingers still roam. For the first day of their lockdown, Zak, Aaron, and Billy investigate the Bullock Hotel, where the former owner Seth Bullock is claimed to haunt, while Jay monitors the activity at the Wild Bill's Trading Post, the original site of Saloon No. 10, where Wild Bill Hickok was shot dead by Jack McCall after drawing the Dead Man's Hand. For the second day of their lockdown, Zak and Aaron investigate the Fairmont Hotel, a former brothel, where Jack McCall is believed to haunt after he stayed in the hotel prior to his murder of Wild Bill Hickok, and Billy, Jay, and Bill Chappell investigate the Adams House, where it is believed to be haunted by the Adams family after a string of unexpected deaths in the family.

GAC travel across Texas on their own personal Route 666 to investigate three extremely demonic locations. First, they investigate the Concordia Cemetery and the De Soto Hotel in El Paso, both renown for satanic worship on the properties. Then they head to Denton to investigate the Old Alton Bridge, or Goatman's Bridge, who supposedly lurks in the woods around the location, to hunt for the demon that has attacked three women.

GAC are called upon by the mayor of Vicksburg, Mississippi, one of the most haunted towns in America, to investigate the Siege of Vicksburg and its lasting impact on the city. Their first stop is McRaven Mansion, which is widely considered to be the most haunted building in the South.

GAC continue their exploration of Vicksburg, Mississippi, 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.

GAC uncover dangerous paranormal activity at two abandoned locations in Civil War-scarred Vicksburg, Mississippi. First, a former Elks Lodge where an unsolved murder occurred in 2005. Then, the Kuhn Memorial State Hospital, an old hospital with a history of disease and death from the smallpox outbreak.

GAC finish their Civil War investigation in Vicksburg, Mississippi 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 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.

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.

GAC begin their investigation of the Graveyard of the Pacific in Astoria, Oregon, where they explore the port city's infamous Underground, a network of tunnels that were used for Shanghaiing men to use for ship crews. They also uncover a series of misfortunes connected the works of H. P. Lovecraft.

GAC continue their investigation of the Graveyard of the Pacific in Astoria, Oregon, where they encounter a very dangerous and very unholy presence in the basement of the recently renovated Norblad Hostel, a historic hotel which was a former drug den and hostel called the Hideaway Inn.

GAC continue their investigation of the Graveyard of the Pacific at the Commander's House at Fort Stevens, a former military installation near Astoria, Oregon, that's haunted by a tragic past and home to an aggressive entity believed to be a male shadow figure who may be involved with a soldier who was beaten to death while on duty in the 1860s.

GAC conclude their investigation of the Graveyard of the Pacific with a visit to Washington State, where they explore the North Head Light, a lighthouse that bore witness to a suspicious suicide by the first keeper's wife Mary and some of the most tragic shipwrecks on the Pacific Coast.

Zak and the crew are live from The Haunted Museum in Las Vegas, Nevada, for a 4-hour special investigation.

The crew travels to Alton, Illinois, a town considered by many to be one of the most haunted places in America, to investigate the Victorian McPike Mansion that has a rich history and reports of dangerous paranormal activity.

GAC concludes their two-part investigation of Alton, Illinois, at the Mineral Springs Hotel. The 1914 structure has been witness to multiple deaths, and Zak believes a demonic entity is keeping these lost souls trapped inside the building.

Zak and the team investigate the home of the Perron family, who are portrayed in the film The Conjuring. The Harrisville home is one of the most terrifying places in the world and has also been made famous by the work of Ed and Lorraine Warren who were called in to help by the Perron family. The crew is ready to confront the dangerous consequences of investigating the infamous house.

GAC travel to the Greater Wynnewood Exotic Animal Park in Wynwood, Oklahoma to investigate claims of paranormal activity of tortured souls believed to be haunting the zoo that was recently tainted by tragedy and the criminal dealings of its former infamous owner, Joe Exotic of Tiger King.

GAC travel to Los Angeles, California to investigate the Stay on Main Hotel (formerly known as the Cecil Hotel), whose past has been beset by multiple suicides, murders, devil worshipping and serial killers. The hotel is best-known for the mysterious death of Eliza Lam, whose body was found in the hotel's water tower.

Zak, Nick, and Aaron spend seven hours locked inside Weston, West Virginia's Trans-Allegheny Lunatic Asylum, a former psychiatric hospital claimed to be one of the country's most haunted locations.

This special features investigative highlights from the GAC's lockdown inside the Trans-Allegheny Lunatic Asylum.

The crew gets locked inside the Trans-Allegheny Lunatic Asylum in Weston, West Virginia, and goes behind-the-scenes of their most infamous lockdown yet.

This special is a re-edited, extended version of GAC's previous investigation on the small Italian island of Poveglia.

From their headquarters in Las Vegas, Nevada, Zak, Nick, and Aaron present some of the best evidence captured in previous episodes.

The GAC discuss their scariest experiences throughout the seasons while investigating during their lockdowns.

The crew checks themselves into a room in Longfellow's Wayside Inn where it is claimed the ghost of Jerusha Howe is to be waiting for her lover to return from across the sea.

While at Zak's house in his "dungeon" room, the Ghost Adventures Crew recall some of their spookiest encounters during their season 5 lockdowns in various haunted hotels and hospitals in their travels across the country. "Horror Hotels" includes the Stanley Hotel, Mizpah Hotel, Goldfield Hotel, the Cosmopolitan Hotel in San Diego, Jerome Grand Hotel, and the Silver Queen Hotel. "Deadliest Hospitals" includes St. Mary's Art Center, Ashmore Estates, and Letchworth Village.

Zak, Nick, and Aaron remember their most terrifying ghostly encounters with female entities, haunted houses, and battlefields they encountered all during their Season 5 lockdowns. "Wickedest Women" includes Lizzie Borden of the Lizzie Borden House, Bridget Bishop of The Witch House, and Lavinia Fisher of Old Charleston Jail. "Houses of Terror" includes Villisca Axe Murder House, Winchester Mystery House, Loretta Lynn Plantation House, Maysville Slave House, Rocky Point Manor, and the Jennie Wade House. "Bloodiest Battlefields" includes Perryville Battlefield, Gettysburg Battlefield and Old Fort Eric.

The GAC travel to West Wycombe, thirty miles outside London, England, where they explore the infamous Hellfire Caves and seek to conjure up the spirits of 18th century royalty (Sir Francis Dashwood and Paul Whitehead) who are said to still dwell there by performing an ancient and secret pagan ritual with special guest "Lady Snake" who previously appeared in the Ancient Ram Inn episode.

The guys are in Gillingham, Kent, England, just southeast of London, hunkering down inside Fort Horsted, an old World War II fort built on ancient Anglo-Saxon land. Then the guys recruit locals to conduct a séance to provoke the demonic spirits that terrify visitors in what they call the "Demon Area" of the tunnel at the fort.

The GAC showcase the most disturbing prisons and detention centers in the country. With a history of hangings, murders, electrocutions and suicides, these facilities have turned into spiritual battlegrounds. Locations featured are Moundsville Penitentiary in Moundsville, West Virginia; Idaho State Penitentiary in Boise, Idaho; Preston Castle in Ione, California; Eastern State Penitentiary in Philadelphia, Pennsylvania; Ohio State Reformatory in Mansfield, Ohio; Old Charleston Jail in Charleston, South Carolina; and Central Unit Prison in Sugar Land, Texas.

Zak, Nick, and Aaron recap their previous investigations of haunted frontier and ghost towns in Arizona, California, and Nevada that are in existence since the days of the American Wild West. Locations featured are the Birdcage Theater in Tombstone, Arizona, and the Stonehouse Brewery in Nevada City, California.

The crew recall their most frightening investigations of paranormal activity at various hospitals, sanitariums and asylums where violent deaths, mistreatment and abuse took place. Locations featured are Pennhurst State School in Spring City, Pennsylvania, Yorktown Memorial Hospital in Yorktown, Texas; Ashmore Estates in Ashmore, Illinois; Northern New Jersey Asylum in Cedar Grove, New Jersey; Waverly Hills Sanatorium in Louisville, Kentucky; Linda Vista Community Hospital in Los Angeles, California; Letchworth Village in Haverstraw, New York; Rolling Hills Asylum in East Bethany, New York; and Tooele Hospital in Tooele, Utah.

The guys remember the spirits in their previous lockdowns at the most haunted bars, restaurants, and nightclubs. Locations featured are Bobby Mackey's Music World in Wilder, Kentucky; Old Washoe Club in Virginia City, Nevada; Kell's Irish Pub in Seattle, Washington; Moon River Brewing Company in Savannah, Georgia; Lyceum Restaurant in Salem, Massachusetts; and Excalibur Nightclub in Chicago, Illinois.

Zak, Nick, and Aaron recap all the ghostly guest during their lockdowns at various haunted hotels where murders, shootings and suicides had occurred. Locations featured are Stanley Hotel in Estes Park, Colorado; Longfellow's Wayside Inn in Sudbury, Massachusetts; Goldfield Hotel in Goldfield, Nevada; Amargosa Opera House in Death Valley Junction, California; Copper Queen Hotel and Oliver House in Bisbee, Arizona; The Palmer House (Sauk Centre) in Sauk Centre, Minnesota; Mizpah Hotel in Tonopah, Nevada; and Pico House in Los Angeles, California.

The Ghost Adventures Crew recall all of their ghost hunts that have taken place in homes that are said to be haunted. Locations feature are the Rose Hall Plantation and the Cinnamon Hill Plantation House, former home of Johnny Cash, both in Montego Bay, Saint James Parish, Jamaica; the Magnolia Lane Plantation in Natchitoches, Louisiana; the Ancient Ram Inn in Wotton-under-Edge, Gloucestershire, England; Prospect Place in Trinway, Ohio; Riddle House in Palm Beach, Florida; Wolfe Manor in Clovis, California; Winchester Mystery House in San Jose, California; and the Houghton Mansion in North Adams, Massachusetts.

The guys remember all their international lockdowns in the world's most sinister places. Locations featured are the Edinburgh Vaults in Edinburgh, Scotland; Rose Hall Great House in Montego Bay, Jamaica; Fort Horsted in Gillingham, England; Ancient Ram Inn in Gloucestershire, England; Poveglia Island in Venice, Italy; the Hellfire Caves in West Wycombe, England; and Fort Erie in Ontario, Canada.

Zak, Nick, and Aaron recap their underground lockdowns during their investigations in dungeons and tunnels. Locations featured are: Hellfire Caves in West Wycombe, England; Sacramento Tunnels in Sacramento, California; Pennhurst State School in Spring City, Pennsylvania; Shanghai Tunnels in Portland, Oregon; Gettysburg Orphanage (Soldier's National Museum) and Jennie Wade House in Gettysburg, Pennsylvania; Hill View Manor in New Castle, Pennsylvania; and Rolling Hills Asylum in East Bethany, New York.

GAC recall their most intense encounters and life-threatening moments with ghosts and spirits of all time during their lockdowns. Locations featured are the Poveglia Island in Venice, Italy; Maysville Slave House in Maysville, Kentucky; Preston Castle in Ione, California; Moon River Brewing Company in Savannah, Georgia; Magnolia Lane Plantation in Natchitoches, Louisiana; Fort Horsted in Gillingham, Kent, England and the Central Unit Prison in Sugar Land, Texas.

Zak, Nick and Aaron remember their past lockdowns that focus on ghosts and spirits with strong attachments to the people or places they left behind. Locations include the Ohio State Reformatory in Mansfield, Ohio, the Linda Vista Community Hospital in Los Angeles, California, the Villisca Axe Murder House in Villisca, Iowa, Letchworth Village in Haverstraw, New York, the Galka Family Home in Granby, Connecticut, Ashmore Estates in Ashmore, Illinois, and the West Virginia State Penitentiary in Moundsville, West Virginia.

GAC examine war-torn locations filled with the echoes of America's violent history. There is a unique form of shock, misery and terror attached to battlefields. When the fight is over, the suffering remains in the manifestation of spirits, some of whom are bold enough to summon the guys even closer. Locations include Remington Arms Factory in Bridgeport, Connecticut, Sloss Furnace in Birmingham, Alabama, Hales Bar Marina and Dam in Haletown, Tennessee, Fort Chaffee in Fort Smith, Arkansas, USS Hornet in Alameda, California, Execution Rocks Lighthouse in New Rochelle, New York, Castillo de San Marcos in St. Augustine, Florida and Rocky Point Manor in Harrodsburg, Kentucky, along with Perryville Battlefield in Perryville, Kentucky.

Over the years, Zak, Nick and Aaron have invited many guests to participate in some of their most memorable investigations. People and places include Mötley Crüe's Vince Neil and Bruce Westcott, Frank Sinatra's former pianist at the Riviera Hotel and Casino in Las Vegas, Nevada, The Hollywood Ghost Hunters, consisting of Kane Hodder, R.A. Mihailoff, and Rick McCallum at the Pico House in Los Angeles, California, Liz Nowicki at the Lizzie Borden House in Fall River, Massachusetts, Brendan Schaub at the Peabody-Whitehead Mansion in Denver, Colorado, Chad Lindberg at the Linda Vista Community Hospital in Los Angeles, California, Roy Marshall at the Villisca Axe Murder House in Villisca, Iowa, Christian Day at the Witch House in Salem, Massachusetts, Dakota and Rob Laden, the winners of the Ghost Adventures Crew Mashup Challenge, at the Old Charleston Jail in Charleston, South Carolina, Joe Tasso, Wally Luna, and Christy Silva at Bonnie Springs Ranch in Blue Diamond, Nevada.

Zak, Nick and Aaron look back at the series one hundred most memorable moments and investigations in celebration of the upcoming 100th episode. Also fans vote on their favorite funniest and scariest moments to see which moments are the winners of each episode.

In a two-hour Halloween special, GAC jet off to the mysterious country of Romania to their dream destination to Transylvania to follow in the footsteps of Vlad Tepes a.k.a. Dracula. Whilst in the Eastern European country, they split up and investigate three different locations. Nick and Aaron visit the ruins of Targoviste Castle where Vlad the Impaler lived up to his nickname impaling 200,000 of his enemies around the castle. Meanwhile, Zak travels to the notorious Hoia-Baciu Forest known for its extraterrestrial/supernatural/paranormal manifestations in which he and audio tech Billy journey deeper into the "Devil's Heart", a circular clearing where no trees grow and light anomalies appear. Lastly, the guys meet up for their lockdown in Hunedoara Castle, known as Dracula's Castle where he was imprisoned.

Zak heads to Paris, where he learns from locals that the dead are buried just beneath the streets. To be exact, 65 feet below in a massive maze of tunnels. His mission is to learn everything he can about the culture, the history, and the mysteries of Paris' Catacombs, especially if it relates to the afterlife.

GAC travel to the mystical country of Ireland to investigate locations steeped with demonic activity, while also covering the origins of Halloween. To start their Irish adventure, they begin with a trip to the cave at Rathcroghan; the birthplace of Samhain. Nick and Billy investigate the Leap Castle north of Roscrea in Clareen, Ireland's most haunted castle, to look for the "elemental", Zak, Aaron, and Jay investigate the Hell-Fire Club Lodge, on Montpelier Hill. They learn about the stories of Satan visiting the premises and the mythological creatures of Massy Woods, including a banshee. Next, they hear the legend of the Black Cat of Killakee that haunts the Stewards House which sits at the bottom of the hill. The guys regroup to for their journey south in County Wexford for their lockdown in Loftus Hall, Ireland's most haunted house, outside of Duncannon, where the devil is believed to have stayed the night.

GAC travel to the legendary Wild West town of Deadwood, in South Dakota's Black Hills to investigate its most haunted locations, where the spirits of cowboys and gunslingers still roam. For the first day of their lockdown, Zak, Aaron, and Billy investigate the Bullock Hotel, where the former owner Seth Bullock is claimed to haunt, while Jay monitors the activity at the Wild Bill's Trading Post, the original site of Saloon No. 10, where Wild Bill Hickok was shot dead by Jack McCall after drawing the Dead Man's Hand. For the second day of their lockdown, Zak and Aaron investigate the Fairmont Hotel, a former brothel, where Jack McCall is believed to haunt after he stayed in the hotel prior to his murder of Wild Bill Hickok, and Billy, Jay, and Bill Chappell investigate the Adams House, where it is believed to be haunted by the Adams family after a string of unexpected deaths in the family.

GAC travel across Texas on their own personal Route 666 to investigate three extremely demonic locations. First, they investigate the Concordia Cemetery and the De Soto Hotel in El Paso, both renown for satanic worship on the properties. Then they head to Denton to investigate the Old Alton Bridge, or Goatman's Bridge, who supposedly lurks in the woods around the location, to hunt for the demon that has attacked three women.

GAC are called upon by the mayor of Vicksburg, Mississippi, one of the most haunted towns in America, to investigate the Siege of Vicksburg and its lasting impact on the city. Their first stop is McRaven Mansion, which is widely considered to be the most haunted building in the South.

GAC continue their exploration of Vicksburg, Mississippi, 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.

GAC uncover dangerous paranormal activity at two abandoned locations in Civil War-scarred Vicksburg, Mississippi. First, a former Elks Lodge where an unsolved murder occurred in 2005. Then, the Kuhn Memorial State Hospital, an old hospital with a history of disease and death from the smallpox outbreak.

GAC finish their Civil War investigation in Vicksburg, Mississippi 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 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.

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.

GAC begin their investigation of the Graveyard of the Pacific in Astoria, Oregon, where they explore the port city's infamous Underground, a network of tunnels that were used for Shanghaiing men to use for ship crews. They also uncover a series of misfortunes connected the works of H. P. Lovecraft.

GAC continue their investigation of the Graveyard of the Pacific in Astoria, Oregon, where they encounter a very dangerous and very unholy presence in the basement of the recently renovated Norblad Hostel, a historic hotel which was a former drug den and hostel called the Hideaway Inn.

GAC continue their investigation of the Graveyard of the Pacific at the Commander's House at Fort Stevens, a former military installation near Astoria, Oregon, that's haunted by a tragic past and home to an aggressive entity believed to be a male shadow figure who may be involved with a soldier who was beaten to death while on duty in the 1860s.

GAC conclude their investigation of the Graveyard of the Pacific with a visit to Washington State, where they explore the North Head Light, a lighthouse that bore witness to a suspicious suicide by the first keeper's wife Mary and some of the most tragic shipwrecks on the Pacific Coast.

Zak and the crew are live from The Haunted Museum in Las Vegas, Nevada, for a 4-hour special investigation.

The crew travels to Alton, Illinois, a town considered by many to be one of the most haunted places in America, to investigate the Victorian McPike Mansion that has a rich history and reports of dangerous paranormal activity.

GAC concludes their two-part investigation of Alton, Illinois, at the Mineral Springs Hotel. The 1914 structure has been witness to multiple deaths, and Zak believes a demonic entity is keeping these lost souls trapped inside the building.

Zak and the team investigate the home of the Perron family, who are portrayed in the film The Conjuring. The Harrisville home is one of the most terrifying places in the world and has also been made famous by the work of Ed and Lorraine Warren who were called in to help by the Perron family. The crew is ready to confront the dangerous consequences of investigating the infamous house.

GAC travel to the Greater Wynnewood Exotic Animal Park in Wynwood, Oklahoma to investigate claims of paranormal activity of tortured souls believed to be haunting the zoo that was recently tainted by tragedy and the criminal dealings of its former infamous owner, Joe Exotic of Tiger King.

GAC travel to Los Angeles, California to investigate the Stay on Main Hotel (formerly known as the Cecil Hotel), whose past has been beset by multiple suicides, murders, devil worshipping and serial killers. The hotel is best-known for the mysterious death of Eliza Lam, whose body was found in the hotel's water tower.