The softening of Castiel's expression is probably the best that Sam could ever have hoped for. "I enjoyed it when I read it as well. My mother read it to my brother, then Dean read it to me when I was old enough to understand." Mary Winchester had died when Sam was very young, after all.

He nods, relaxing a bit himself. And ignoring Zachariah. Now is the time he has to make his impression on Castiel, if he's going to make one at all. "I do. Right now, I'm in my third and final year. Once that's finished, I'll be looking for a job with the district attorney back home or possibly join in working at the family business. Winchester Investigations." They weren't a big name, but they were important in their area. And worked with the police and law enforcement quite closely.