Zak and the guys revisit their investigation of Pythian Castle and its heartbreaking history of death. They speculate a dark entity feeds off the suffering of the living, while Jay surprises all with curious evidence and an out-of-this-world theory.

Zak and the guys look back at their investigation of San Haven Sanatorium, a once-sacred land infused with death, despair and a dark energy that overcomes all who step onto the property.