We watch "Twice Upon a Time" (Series 10, Episode 13) where the Doctor has doubts about continuing with his existence after battling the Cybermen... but reconsiders after encountering himself post battling the Cybermen. Whilst said Cyber-jerking is occurring, "Bill" returns to show the Doctors what wonderful lives they had, “Nardole” shows up because... who cares... it’s "Nardy!", and then "Clara" shows up to either infuriate the Clara haters or invigorate the Clara lovers. Since I count myself in the latter category, I have one final thing to say on this episode: Geronimo!!!