Book 16. The story starts and comes to a point within this book, but it alludes to a lot that went before -- and points very sharply at what will happen after.
Spoilers ahead for earlier books.
That is, of course, business as usual. He goes to see his girlfriend and comes back to find a fire and a lot of trouble. It involves an assassination attempt, the rules of the Accords, family news, how McCoy hates the White Court, someone who works for a dollar, Mab telling Harry that he must do two favors for Lara, what is happening to Molly, Demonreach, and more.