Dean, Rufus and others in “Unfinished Business”

Dean

There's a case down in Goodlettsville, Tennessee. Bobby had a call from another hunter, a guy named Harvey. He was hunting a case, house was rumored to be chock full of poltergeists. But he couldn't find the bones to burn, so he calls Bobby for backup. Bobby high-tails it down there, he goes into the house, buckshots, guns blazin'—

Rufus

No, no, no, no, no! Do not tell me how you tell it. Tell me how it really happened.

Bobby

I stepped one foot inside that house, and filled my drawers. You could feel the badness, Rufus. I found Harv on the floor, in a coma. I tried to help, but he looked like he'd been there for days. And then I heard footsteps. I was trapped. But I had this old Celtic sigil. Sort of a 'break glass in case of emergency' sort of thing. Supposed to trap monsters, but to be honest, the damn thing never worked before. But it was all I had, so I started. And this house is bad juju, it just got a hell of a lot worse. Then I finished the sigil, and once I did, the house went back to normal.