Come Back Safe

"If I don't come back before dawn," Dean says, his hands along with the blade at his sides. "Leave. Drive out of here, and don't look back," he finishes quietly. / "Come back safe," he whispers anyway. "Please." / Dean's going in to kill Abaddon. It's a question of whether he'll come out or not. Sam waits for him, and worries about that same question.