A/N: Season 2 AU, for a prompt by nong_pradu on the current hoodie_time comment-fic meme: You know that switch in the psychic kids' brains that Ava was talking about? Well old Yellow Eyes is tired of waiting for Sam to flip his, so he decides to give Sam a little nudge...
Tripwire
Sam has yelled himself hoarse trying to get Yellow-Eyes to let Dean go, to turn his sick sense of humor on Sam instead. The only time he's been able to catch the demon's attention was when he inadvertently threw a bookcase to try to shield Dean, and then Yellow-Eyes had only laughed.
He wants Sam to use his powers. So far, Sam's done his best not to give him the satisfaction.
But Dean can't take much more; it'd be a miracle if every bone in Dean's body isn't broken by now, not to mention the internal bleeding he's bound to have from being bounced literally from pillar to post. And a rage like liquid fire is pumping through Sam's veins as his heart beats like it wants to break out of his chest. He has to save Dean somehow.
Then Yellow-Eyes leers at Sam and says something he can't make out over the blood roaring in his ears, and suddenly Dean is screaming like he's four years old again because he's slowly... sliding... up... the wall.
Like Mom.
Something pops behind Sam's eyes.
Then Yellow-Eyes is against the wall and Dean is fall—is settling gently to the floor. Sam's still across the room, but he gives Yellow-Eyes a vicious shake that knocks the smug smile off the demon's face.
Sam points to Dean. "Fix him."
Yellow-Eyes snorts. "Make me, Psychic Boy."
Sam yanks, and demon smoke comes halfway out the host's mouth before it goes back in. "I said fix him."
"Make me a deal," Yellow-Eyes replies breathlessly. "Can't... do a thing... without a deal."
There's blood pouring from Sam's nose as his heart pounds I want him dead, I want him dead, Iwanthimdead Iwanthimdead—
There's a flash from Yellow-Eyes' head—
Sam's got a killer headache, and Dean's staring at him in shock, but he doesn't care. He's got to get Dean to the hospital pronto, so he gathers Dean up carefully and gets halfway to the Impala before his brother actually settles into his arms, but that fact doesn't register. He's saved Dean; that's all that matters.
He'll come back to deal with the corpse—and figure out how he killed it—later on.