Mark Sheppard invades your DVR, on ‘Supernatural’ and more October 12, 2010 Recurring and Guest Stars News Click here to read a great interview with Mark Sheppard (Crowley). Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)Click to share on Tumblr (Opens in new window)Click to share on Pinterest (Opens in new window)Click to share on Reddit (Opens in new window) Related