Echoes of a past investigation come into focus as Zak and the crew investigate a stately California ranch steeped in tragedy. A dark energy has taken root on the land, and the team must unravel its haunting secrets to help the terrified caretakers.

The crew peels back the glamorous façade of a Phoenix, Ariz., hotel to expose a darkness that's said to drive people mad; the team encounters a demonic presence that could be responsible for countless deaths on the property.