Duke gave him a sharp look. It was a very Lucifer-ian response but it felt . . . underwhelming in light of how he was feeling right now.

"Nathan promised not to go after him. I -- we have to go, right? This is -- he's my brother. I'm the only one who can talk him down."

He was barely managing to say things like "this is my fault" and imply that he needed to do this alone. Be proud of him!