It is a talky episode in the best sense: every exchange is a small duel, and nobody brought a shield. A thread left dangling since E10 gets tied off at last, neatly enough to make a librarian smile. Chelsea enters the story, and the cast list gets a little more dangerous. If this episode had a tagline, it would be "We finished searching the doctor's residence." You will not regret it, and you will not remember it.