AU: Sam and Dean are two familiars who become Bonded to Castiel and Gabriel, a pair of powerful witches who live together. Destiel, Sabriel.
"Something's wrong. She never blocks me out like this."
Dean was unable to say anything to quell the trembling urgency in his brother's tone as they made their way for the door. He didn't know anything about the connection between a witch and a familiar other than what he'd heard from others who did; he didn't understand how this whole mental mind-meld thing worked. According to what Sam had told him, though, familiar and witch were constantly aware of each other's general mental frame of mind. "I thought you could always read her mind or something."
Sam shook his head, eyes trained ahead on the door. "When we first Bonded, before we really knew each other, sometimes she kept stuff from me, but she hasn't closed herself off like that in…"
He trailed off. They'd reached the door, which was open a few inches. The handle was hanging off its sc