In Iowa, a father-daughter team comes face-to-face with the ghost of an ax-murderer. In Massachusetts, the spirit of an old sea captain grapples with lead investigator, Jack Kenna.

In Ohio, the ghost of a crazed murderer will stop at nothing to keep his secrets. In Massachusetts, a man suffering violent hauntings turns to investigators to save him from possession. In Michigan, an investigator hunts the ghost of a violent prisoner.

All hell breaks loose when investigators disturb tortured spirits trapped in an old passenger train with a tragic past. A ghost hunter is toyed with by the demonic spirit of a child, and the violent ghost of a school principal ruthlessly attacks.

A funeral home's dark past comes back to haunt an investigator. Another team investigates a crumbling mansion and is terrorized by the angry spirit of a scorned wife. And in Ohio, the spirit of a former owner has returned to threaten the new homeowner.

In Rhode Island, a couple calls in an investigator after their flirtation with the occult unleashes a demonic spirit. In Massachusetts, a ghost hunter disturbs an ancient evil spirit. In Ohio, an investigator captures startling proof of a haunting.

In New York, an investigator battles a demonic entity intent on harming his own son. In Ohio, a child's imaginary friend is revealed to be something much darker and in an old Colorado jail, investigators are stalked by a dangerous doppelgänger.