A fire sparks new, darker paranormal activity at Gunslinger Gulch.

A seductive spirit may be hiding a sinister agenda as it courts Karen.

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To convince his fractured team they are battling Beelzebub, Tim leads them to an epicenter of suffering, the Old Montana State Prison. The emotional experience pushes Tim to cross a dangerous line and summon the high-ranking demon.

The team splinters when Tim and Scott summon a demon despite Sarah and Sapphire's objections. But when the experiment exposes a new threat directly tied to Karen, they must put their differences aside and fight the Darkness together.

The team moves in to free the Broussards from the darkness plaguing them. But as the Gunslinger Gulch saga ends, Tim feels only dread. Has the malevolent underground force moved on, setting its sights on a much larger target?