Nate shakes his head firmly when she mentions the ambulance. He doesn't care if he's actually losing his mind in an alley, he's not going in an ambulance. He doesn't need a hospital and he doesn't need people fussing over him. Even if this Sam isn't real, Nate doesn't want to leave him. Not yet.

"Don't," he says, and he doesn't beg her but he doesn't think she'll argue with him. She looks scared and he's sorry for that, sorry that he's causing her this kind of worry after what she's just been through, so he forces himself to breathe.

Slowly, he pushes air in and out of his lungs and when he glances down Sam is gone again. Slowly, whatever had a grip on his mind is loosening, and Nate thinks maybe he can start to breathe again. Sam isn't here. Whatever is happening right now, he knows she's right. It's not real. Sam died ten years ago. He's gone.

"This goddamn city," he says, squeezing his eyes shut for a moment, just in case. Something is setting off alarms in his brain, something is telling him he knows this, he knows the cause, but it's just out of reach. Nate opens his eyes, steadily ignores Sam blinking back into view and meets Beth's eyes. "I think it's magic," he says, and maybe once he would have thought he sounded like an idiot, but not anymore.