In full disclosure, I am good friends with Sarah, but that in no way influences my affection for these novels. Simply put, her series just keeps getting better, and this third installment was so much fun. 
 Celaena is off learning to control her recently revealed powers with the help of new Fae character Rowan, while back in Adarlan, a war is brewing. The King is extending his reach and building an army, complete with ghastly monsters and an allegiance with the witch clans. Poor Chaol (still in shock at Celaena's true nature) and Dorian (constantly trying to hide his magic) are stuck trying to determine where they stand. 
 I was especially happy with the new characters introduced in this installment. I love Manon, even if she is heartless. I've seen some people claim this witch's POV was completely unnecessary, but I have a feeling she is going to become a huge player as the witches' role in the brewing war intensifies. Plus, I loved Manon's relationship with her wyvern; the snippets of humanity I could see bubbling beneath her black surface. And Rowan, Celaena's Fae escort/trainer in Wendlyn was another wonderful addition to the cast. Their slow-building friendship was so easy to root for, and I can't wait to see where things go in the fourth book! 
 Originally reviewed here. 
 NOTE: This review is based on an ARC.