Welcome to The Authority, Slate’s deep dive into the world(s) of HBO’s His Dark Materials. Each week, Slate’s scholars of experimental theology Dan Kois and Laura Miller discuss the new HBO series and Philip Pullman’s original trilogy. This week, they’re discussing episode 5, “The Lost Boy,” which cuts back and forth between Lyra’s adventures with the Gyptians, and the introduction of the character of Will Parry. Plus: a closer look at the alethiometer. Recommended reading: His Dark Materials Illuminated You can also read Laura’s Slate piece on Francis Yates here. Join the conversation: Email: [email protected] Dan Kois on Twitter: @dankois Laura Miller on Twitter: @magiciansbook Podcast production by Phil Surkis, with engineering assistance from Rosemary Belson.