"You taught me the difference between life and mindless existence. For that, Dean, I will always be in your debt. If there's a chance you can be saved, however small, I'm going to try." [After killing Cain, Dean's sanity slips away. Desperate to save him, Castiel seeks out Crowley to make a dangerous trade. Post-Executioner's Song.] [Dark Dean, Badass Cas, Sam & Charlie friendship]
Rated: T - English - Hurt/Comfort/Angst - Chapters: 20 - Words: 40,068 - Reviews: 94 - Favs: 62 - Follows: 88 - Updated: 8/2/2017 - Published: 3/9/2015 - Sam W., Dean W., Castiel, Charlie B. - Complete