A bit of a mixed bag. Wonderfully written with interesting characters, expect no less from Kresley Cole. But this book delivers something a bit different from the other IAD books, mainly a hero who is so far from heroic that even in the end I was unconvinced. Declan Chase is a reincarnation of Aiden the Fierce, Regin's berserker who comes back time after time to try to win her love. But this incarnation hates immortals and winds up capturing and torturing Regin and many other important characters from the series. Yeah we love the tortured heroes, we love the bad boys, but somehow someone who can easily torture, vivisect, and imprison people without blinking seems difficult to redeem. 
 While all is explained and ultimately forgiven, it was hard for me as a reader to simply forgive and forget all that Chase had done. That said, it was a compelling story and a good romance. I think Chase is a good match for Regin, torture notwithstanding. 
 A definite Must Read, just not sure where it fits in the IAD compendium. I guess file it under "It's Complicated".