As soon as the Sams helped him to his feet, Dean pushed them away and drew his gun. Sure, he could barely stand on his own and the room kept going swish, but there was no way in hell he was getting any closer to Twiddle Dee and Twiddle Dum until he figured out what was going on.

He tried to focus and take aim. "Which –" He swallowed hard and steadied himself. "Where's Sam?"

"We're Sam," they said together.

"Good Lord," Dean muttered. "They're in stereo."

"Dean, we think that the stone had some kind of duplication effect," the first Sam said.

"Duplication? Like a Xerox?" He kept his gun raised. "So, one of you isn't real. Which is which?"

"It doesn't work like that," the other Sam said. "We've split or something. Equally the same. Same memories. Same everything."

Dean wasn't hearing this. Crazy stuff like this wasn't normal. It wasn't natural. And Sam…and Sam weren't fazed one bit. They were just cool as a cucumber.

"You're taking this well," he said.

"We've had plenty of time," they said together.

"What?" Dean looked over their shoulders, squinting through his aching haze to the circle. He frowned. The demon was gone. Hell, the circle was gone.

"You were out a good hour," the second Sam explained. "Sam and I finished the exorcism, disposed of the body, and looked around for the missing charmed stone, but we couldn't find it."

Dean just kept staring. He didn't know what to say. He didn't know if it was the concussion slowing him down, or if he'd just finally gone insane. None of this made any sense to him, but he didn't have the strength to sort through the mess alone.

He just wanted Sam back. The real Sam. And he couldn't tell the difference. He didn't know who these people were or if they really were Sam.

He squeezed his eyes shut, battling against the pounding in his head.

Dean jerked, realizing one of the Sams had eased up to him. He'd never heard him get close. "Let's get back to the motel," he said, taking the gun from Dean's hand. "We'll figure things out after you get some rest."

Dean opened his mouth to protest, but the other Sam came to his opposite side and grabbed him by the shoulder. Before he knew it, they both were guiding him out of the warehouse and toward the Impala. Too stunned and tired to argue, Dean allowed them to lead him away, choosing to file away the persistent nagging in the back of his mind for when he could think a little more clearly.