We watch "Empress of Mars" (Season 10, Episode 9) where much of the Who Crew travels to Mars during the Victorian Era to witness firsthand what happens to subjugated natives encountering a "superior race." Sigh. Whilst said cultural exchange was occurring, the Doctor wrongly entrusts his human friends with keeping the peace, Bill spends some quality girl time with said Ice Warrior Empress, and Nardole saves the day late in the game with... Missy? Bet you didn’t see that one coming. Oh. You did? My bad...