Dean: There’s only one thing that can kill him.
Sam: The blade.
Crowley:(giving the First Blade to Dean) Give this back when you’re done.
Cain: You can’t stop me.
Dean: I’ll do what I have to do.
Cain:(picking up the First Blade) It’s been too long.
Narrator: Supernatural, all-new this Tuesday at 9/8 central on The CW.