When Dean gets back to the room, Sam isn't there.

Great. He puts the bags down on the tiny excuse for a table and looks for some sort of a note, an indication where his brother went, even though he knows perfectly well where he is.

How can he do this? How can he keep feeding this sick obsession of his?

He reaches for his phone, hits speed dial-1.

It rings. Then: "Yeah?"

"Put the comic books down and get your ass back here. You're not spending all our money on that crap."

"Even your Authority?"

"Except my Authority. That book kicks ass."