While previous episodes have heavy doses of exposition passing as dialogue, this episode lightly weaves banter with both plot advancement and Doctor lore in a more believable and balanced effect. The timing and wit is consistent throughout, and is joined with some elements of physical humor. The result is, as my husband blurted out, "the truly funniest episode in a long time."
This season seems to be working hard to broaden the Doctor Who audience. First, by the exposition to catch up viewers on the long history of the Doctor. Then by sweeping in more fantasy viewers in the sci-fi/fantasy genres, through Goblins, the Pantheon, and superstitions. Also, with Disney as its sole distributor in the U. S., by adding musical/dancing elements to plots and performances. Recent episodes also show aspects of British culture that seem to have the most appeal for American audiences, such as the Beatles and, with this episode, the Romantic Regency period.
This episode showed all of this to great effect, especially for me, a hopeless romantic who loves the Regency period, intrigue and romance. While I love classic Doctors (including their cynical and crunchy turns) and hope we don't stray too far, I appreciate this fresh take, played by incredibly talented performers.