Steven Moffat discusses the rules of regeneration (and why the Twelfth Doctor wi… By MeMe | October 3, 2013 - 1:02 pm |October 3, 2013 Doctor Who Images From Around The Web Share this:ShareEmailRedditFacebookTwitterGoogleTumblrPinterestPocket Tagged bbc, doctor who, doctor who images, matt-smith. Bookmark the permalink.