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.