Go behind the scenes of Destination America's series "Haunted Towns."

Pennhurst Asylum has secrets but the entities that haunt its corridors have a story to tell. Go inside its crumbling buildings and haunted underground tunnels to discover who or what lurks there.

Meet Pam and Tyler, the psychic mediums of Ghost Hunts USA. With exclusive access to the Mayflower Building at Pennhurst Asylum, they use their incredible abilities to help the lost and trapped spirits inside.

The team begins their investigation of Pennhurst Asylum. Immediately, the medium picks up on the presence of a dark entity in the basement of the Mayflower Building. But evidence from the Phasmabox reveals there's more than one entity present.

The paranormal activity in the Mayflower Building ramps up as the Ghost Hunts USA team digs deeper to try to make contact with the entities that still roam the corridors of Pennhurst Asylum.

A paranormally gifted teenager must match wits against a cagey demon intent on engineering his demise.

While renovating a relative’s home, the Morrissons come across an evil necklace and bring it home with them. Soon each family member is haunted by a dark entity. Can a demonologist cleanse the home before it’s too late?

When Jennifer Patterson finds her dream home in rural Indiana, she’s beyond excited. Soon, unexplained voices and scents, lead her to believe the house is haunted by the ghost of the previous owner.

After moving into a new home, the Barbours worry about the negative effect an imaginary friend is having on their daughter. It becomes apparent that they are dealing with an angry ghost. Can paranormal investigators help them before it’s too late?

When Jacinda Rearick finds orbs in her photos, she thinks they are friendly spirits. But when a dark entity begins tormenting her family she realizes they are dealing with evil. Unable to escape its clutches, Jacinda fears for her family’s safety.

After moving to the suburbs, Bill and Amanda Toler suspect their home is haunted. At first the couple dismiss the activity as harmless, but when Bill gets scratched & Amanda sees a terrifying inhuman face, they can no longer deny the evil presence.

After Candace and John St. Clair explore a haunted tunnel with a gruesome history, an uninvited guest follows them home.

A couple moves into a home with a tragic history and soon believes their house is haunted. After several attacks, they call paranormal investigators for help. Experts rid the house of a demon, but a careless mistake invites evil back into the home.

After a menacing Nazi soldier seeks vengeance for his death and threatens an innocent couple, they seek help to make peace with his ghost.

Stacy Stowe hears ghostly sounds in her home, and assumes it's the spirit of her late husband. But Stacy's young daughter Bryn believes that the entity, is not her father; it’s something evil. Soon the home and the family comes under attack.

A family’s lives are at stake while they try to battle an evil entity sent to tear a young couple apart.