We watch "Sleep No More" (Series 9, Episode 9) where the Doctor and Clara encounter evil 38th century eye-boogers. Whilst said eye-booger encountering was occurring, it turns out the entire episode was likely fraudulent found footage. Or it wasn’t. Darn you writer Mark Gattis... you’re supposed to be Sherlock Holmes’ smarter brother... why did you write yet another unloved Who episode?!?