Believe it or not, this is the first time I've gotten to interview Mark Sheppard. I've met him a few times before at cons, but his only other appearance with "Supernatural" at Comic-Con was last year and I never got a chance to interview him (the press room ran a lot more smoothly this year). Mark was actually the person we talked to first in the press room this time.
In this interview, Mark gives away nothing. He's particularly spoilerphobic, and more than once defers questions about this season, including when is Crowley first appearing, to Jeremy. He like all the others though sings the praises of Jeremy Carver and what he's bringing to the show now.
I'm not going to include a summary on this one, because Mark really doesn't share a lot here. We just had a pleasant talk. I'm sure that whatever Crowley's role is this year, he's going to impress. He always does.