Doctor Who Series 9: 9 Theories That May Actually Come True

3. The Mystery Of Capaldi's Face

When Peter Capaldi first appeared as The Doctor, his face was strikingly familiar. Not just because we'd seen him paraded on our screens on a Zoe Ball hosted special, or the fact that he'd been in countless other shows, but because he'd actually played in the Who universe before. Twice. He was Caecilius in series 4's The Fires of Pompeii, and then John Frobisher in Torchwood's Children of Earth. However, it isn't just a case of coincidence that we've seen the face before, something The Doctor himself alluded to in series 8, with lines such as "who frowned me this face?" Both Moffat and Capaldi have confirmed that it's something they'll be addressing in series 9, with the credit for how it all fits together belonging to Russell T. Davies. It seems as though Frobisher was a very distant descendant of Caecilius, and that his family having to die in Children of Earth was as a direct consequence of him being saved by The Doctor in Pompeii. The theory is that The Doctor specifically chose that face in order to remind himself of the consequences of interfering with timelines, and his past self, which could well tie further into his search of Gallifrey and his part in the Time War.