Sam is still in shock when he is attacked from behind -- by two demons. He drops the knife. One of the demons says, "Lilith sends her regrets she couldn't make it." Ruby appears, picks up the knife and does away with Sam's first assailant in short order. As she takes on the other, she barks at Sam, "Take the girl and run!" The other demon is a formidable foe. When Ruby loses the knife, he pins her to the wall, by her neck (I think the stunt coordinator needs an intervention, regarding his addiction to this move). He says, "Ruby, you're in so much trouble. When we get you down in the basement, the things we're going to do to you..." Then he starts to gag. Ruby looks over his shoulder to see Sam. His magical Pimp Hand of Ipecac is finally out of beta. The demon loses strength and drops Ruby to her feet, as he falls to the floor in a cloud of his own filthy essence, which burns an expressway through the floor and straight back to Hell. Sam's nose bleeds, as does Ruby's lip. She says, "Sam?" He says, "I'm okay." He gasps for breath as he adds, "Thanks." Flash forward to Dean and Sam in their room. Sam explains that Ruby came back for him, and whatever Dean wants to say about it, she saved him. "More than that, she got through to me. What she said to me -- it's what you would have said." Ooh, do you see that look on Dean's face? Fight. Fight. Fight. Fight. No wait, more talking. From Sam. "If it wasn't for her, I wouldn't be here." Dean considers this as Sam waits with a half-resigned, half-hopeful expression on his weary young face.