First thing's first: Allison has a book out! It's called "How TV Can Make You Smarter", available now at Bookshop.org and elsewhere! Plus she has a special offer for our listeners who get the book! As for the episode, well, before we return to the Capaldi era with our Danny Pink episode next week -- a prelude of sorts to the much-anticipated Clarastravaganza/Clarathon -- we take a wee break to open the mailbag. We talk some more about the specifics of Jodie Whittaker's performance, kick around a brilliant listener idea for the Jo Martin Doctor, and go on a merry digression about Steven Moffat's Jekyll, which Alasdair loves arguably a bit too much. (Nah, it's the correct amount.)