While I really enjoy the series characters and life changes, timelines don't synchronize.
Shield of the Dragon left us with Devlin, Midnight, Neirin anf Barra already reconciled with Avalon, Neirin and Barra firmly entrenched as Prince Avalon's High Steward and Senechal, respectively. Twilight begins with Neirin and Troyes still mourning being separated from Avalon and Clan Pendragon, even after many, many decades. Devlin very strongly loathes Avalon and the Clans for banishing and nearly killing Neirin at the time, although Avalon purposely had Neirin's beaten body where Barra would be sure to discover it. We learn Avalon has the gift of magic, and ways to watch over Neirin, which, in truth, is basically stalking in secret.
Anyway, we literally have the backstory of how Devlin and Midnight end up becoming honorary Clan Pendragon members and residents, as well as how Neirin got himself unbanished, then shacked up with both Avalon and his wolfelf with Holy Pendragon Caliburn and Troyes, Neirin's knight dragon, happily rounding out their numbers for snuggles and sexy times. One great talent of Ms. Derr is her skill in drawing out the intense drama, intrigue/suspense, and often grisly encounters with their dastardly enemies. The kidnapping of a Holy Pendragon baby is at the heart of the murders and cross country chases, fights with werewolves and mages, and the puzzle they must unravel to learn exactly who and what they are up against. Aside from my initial confusion and slight irritation at reading the filled-in details of the summary we caught at the end of Shield of the Dragon, I did like the book. I didn't love it, as it was rather violent, and I've never taken to Barra (just don't like him, though I love everyone else). I'd like to believe the plot would have been less annoying, with fewer obstacles, had there been only Neirin, Devlin, and Midnight, and Neirin would have reunited with Avalon much sooner without Barra as an added complication. Yes, the character worked into the plot to give Neirin the excuse to disobey the rule (law?) of getting involved with a wolfelf in the first place, and, he adds extenuating issues to their rescue as well as kidnapping attempts. Aarrgh! They simply don't fit! Beautiful, blonde Neirin is a perfect foil and contrast to tall, dark and gorgeous Prince Avalon! Barra is cute. Maybe a little pretty. Never has he been considered beautiful. He. Doesn't. Fit. In. However, it's my opinion only. So, this one gets three and a half stars.