He does as he's told, still holding onto Dan's -- his own -- hand, eyes closed. A deep breath in and then the turn, which he still doesn't understand, and likely never will, but he's given himself over to Dan's talents, his abilities, and he doesn't regret it. This, whatever it is, it's given them all a chance at beating this thing inside of him. Sam knows its name now, knows how to bring it to the surface, how to fight it, and Marcus trusts it to do the rest.

And when he opens his eyes again, he isn't in the room any longer. He isn't in the warehouse. He's back with Dan and even if he knows it isn't going to last very long, it's worth every single second.

"I told him," he says and his voice is his own again. He keeps quiet, not entirely certain what the demon can and can't hear when they're like this, together in this place. "Sam knows its name, he knows to make it angry, and he knows the traditional Catholic exorcism will work here. I gave him everything I could, Dan. Thanks to you."