. . . sparking X-Mas special regeneration crisis. "We'll find out [in the Christmas special] that Matt Smith is actually the 13th Doctor," showrunner Moffat confirmed to Radio Times. "Although everyone knows that the Doctor can only regenerate 12 times. "That 12 times limit is a central part of Doctor Who mythology - and science fiction is all about rules, right? So if the Doctor can never change again, what's Peter Capaldi doing in the Christmas Special?" The comment section is a must for true Whovians. http://m.digitalspy.com/british-tv/s7/doctor-who/news/a536819/doctor-who-matt-smith-is-the-13th-doctor-says-steven-moffat.html Mods, please make this a global thread.