No Quarter 'Verse-March

Several months ago, after Sam had said yes and before Dean had almost died of the flu, Cas had been out there, on the edge of Camp Chitaqua, listening, listening, trying hear anything, and he'd felt a whisper, a brush of grace against his consciousness. It had terrified him, shook him to his very core, because that voice, that grace - he hadn't felt it in thousands of years.