[It's less that Castiel wasn't able to see through it--he knows he can't read people very well and Sam is practiced at lying as part of being a hunter--but more than he hadn't even considered Sam would be doing it. And that the other had lied to him in the first place, with or without addiction as an excuse.
He's quiet for several more seconds before suddenly pulling himself back together completely, expression smoothing over into his usual neutral one as he lifts his head, sitting up again even if he still has to lean back on the pillows.]
If the withdrawal is not fatal, it lasts approximately a day. Then he will return to himself.
[Or he would, normally. With the amount of demon blood he'd drank, and then Castiel's... It's impossible to predict the outcome even if he survives.]
no subject
He's quiet for several more seconds before suddenly pulling himself back together completely, expression smoothing over into his usual neutral one as he lifts his head, sitting up again even if he still has to lean back on the pillows.]
If the withdrawal is not fatal, it lasts approximately a day. Then he will return to himself.
[Or he would, normally. With the amount of demon blood he'd drank, and then Castiel's... It's impossible to predict the outcome even if he survives.]