Katrina and Jack gain unprecedented access to the infamous Shanghai Tunnels of Portland, Oregon. They've been called on to determine if two newly restored tunnels are safe for public tours after a recent spike in violent paranormal activity.

Katrina and Jack travel to Tennessee to investigate a once-thriving natural springs resort where guests fell victim to the deadly waters. A recent flare-up of paranormal activity has them asking if a dark force has checked into the century-old hotel.