DEAN: Cas, is that really you?
SAM: No. You're – you're dead.
CASTIEL: Yeah, I was. But then I… annoyed an ancient cosmic being so much that he sent me back.
SAM: I don't even know what to say.
DEAN: I do. Welcome home, pal.
CASTIEL: How long was I gone?
DEAN: Too damn long.
SAM: Where were you? In Heaven?
CASTIEL: No. No, I was in the Empty.
CASTIEL: Apparently, it's where angels and demons go when they die.
SAM: What was it like?
CASTIEL: Well, it's dark and...nothing. It's like...nothing. I was sleeping, and then I heard a voice that said my name, and I woke up. I thought you… had done something.
DEAN: No, we… we didn't even think we could bring you back.
SAM: So who was it? Chuck – uh, God?
CASTIEL: No. No, he has no power in the Empty.
DEAN: Well, then, who does?
SAM: You're in a good mood, huh?
DEAN: Yeah. And?
SAM: Nothing. No, no, I-I-I just, uh… you've been having a rough go, so it's… it's good to see you smile.
DEAN: Well, I said I needed a big win. We got Cas back. That's a pretty damn big win.
SAM: Yeah. Fair enough.
JACK: Oh, wow. I'll go tell them.
CASTIEL: Jack. Jack!
JACK: Dean? Dean?
CASTIEL: Jack, I wouldn't do that!
JACK: No, no, no! Dean, it's me. It's me.
DEAN: Ah, hey. Who's making me coffee?
CASTIEL: I told you. He's an angry sleeper. Like a bear
SAM: Jack, look, this life, what we do, it's… it's not easy. And we've all done things we regret.
JACK: Just don't. You're afraid of me.
CASTIEL: Jack, no.
JACK: No, maybe you're right. Maybe I'm just another monster.
DEAN: No, you're not. I thought you were. I did. But… Like Sam said, we've all done bad. We all have blood on our hands. So if you're a monster, we're all monsters.
JACK: No, you don't… Every time I try and do something good, people get hurt. I thought I was getting better. I'm not… I don't know what I am, but I know I can't make the world a better place, not like this. I can't even do one good thing. And I know that if I stay, I'm gonna hurt you. All of you. And… I can't. You're all I have.
SAM: Jack, listen…
JACK: I have to go.
CASTIEL: No, Jack.
JACK: I'm sorry.