"Even if he doesn't - here, look." Sam drags out Dad's journal and turns to a page about two-thirds of the way through where he's pasted a small map of Wyoming. Someone looking closely as he flips through might notice that the handwriting here is different from that seen on earlier pages.

He turns the map so she can see. "That mark there, that's the gate's location. The pentagram's the railroad lines that were used to create a devil's trap of iron to seal it in, with churches at the points to reinforce it."