We hunt Lucifer, trap the bastard and save Cas.

Dean

This whole deep cover thing, it just wasn’t terribly well thought-out. Donning this Cas mask, this grim face of angelic constipation, it’s just, ugh.

Lucifer

I broke you, but I can still smell it. You’ve got that delectable little whiff of defiance.

Lucifer

Cat's out!

Lucifer

Sam: Be safe.
Dean: When am I not?

My name is Dean Winchester and I am on a mission from the future.

Dean