This series has really changed over the years and the original emphasis on Kaylin investigating crimes in a fantasy world, which usually ended with saving that world, has shifted to simply dealing with the world ending crisis. So her day job as a Hawk is mentioned mostly in regards to her absences, and mentions of the fief lord Nightshade, and her complicated feelings about him, see even fewer words than the Hawks. Until now, because Cast in Blood resurrects that story line when assassins attack Nightshade and the Lady of the Barrani with some kind of magical poison that might be a kind of Shadow. I’m remember the question at the end of book two. Will she be Erenne?
Cast in Blood - The Chronicles of Elantra circles back to its biggest dangling plot point