- Foe Yay: Gwendoline repeatedly calls Ace "my dear," while chasing her all over the house with a chloroform soaked handkerchief. During this they wind up physically wrestling each other twice. The latter occasion is on a bed, and prompts another character to remark "Here, you can get arrested for that!" Given that this is set in the Victorian Era, it's more than possible that's literal.
- Foreshadowing: Gwendoline's performance of the music hall song That's the Way to the Zoo can be interpreted in several ways. The most immediate is the Reverend being turned into an ape, but the lyrics could also be taken as alluding to Ace, Nimrod, Control, Josiah, Light and/or the plot in general.
- Les Yay: Ace dresses up in Victorian male evening dress for no apparent reason, and then has two separate Cat Fights with Gwendoline who keeps calling her "My Dear".
YMMV / Doctor Who S26 E2 "Ghost Light"