TWC board the U.S.S. Edson, a haunted battleship that served in the Vietnam War. Their goal is to free the spirits trapped aboard – including a disturbed poltergeist. But the elusive entities seem to have other plans.

TWC returns to one of their first investigations, Old South Pittsburgh Hospital, where a menacing shadow figure roams the hospital's halls. Now with more experience, TWC hopes to uncover the shadow figure's true identity.

TWC are the last to explore the horrific Peoria State Hospital, where more than 10,000 people died. With mere days left until this house of horrors is demolished, the team must work fast to reach the spirits that still call it home.

TWC visit Missouri State Penitentiary to banish the spirits of two sinister child killers that still infest its ghostly cellblocks.

TWC are in Florida at one of the most haunted forts in the country: Castillo de San Marcos, where they attempt to make contact with the disembodied head of a Seminole Indian chief and a pair of doomed lovers caught in a vicious love triangle.

TWC investigates infamous Pauly Jail: built in the 1800s, it has a history of racial prejudice, and unauthorized executions. The guys come to make contact with the victim of a brutal lynching, and a prisoner who was burned alive.

TWC journey to Preston Castle, California's first boys' reformatory school, to find answers to two of its most mysterious deaths—the brutal murder of a beloved housekeeper and the tragic beating death of a teacher.