This book is just filler in the series as the overall plot is moving slowly to the last battle of almost everybody again the Sinsar Dubh. 
 Some threads from the previous book keep continuing and none of the subplots is really finished. 
 All the major players seem to be standing by, waiting for the battle of the battles to take place. They are killing time until they learn what role they will play in the final book of the series: 
 *	Mac is finally visible and she has some sexy times with Barrons. The timing does not really make sense in most of the scenes. 
 *	Christian is still evolving into an Unseelie prince and learns about his uncle. I am still not sure what is happening with Daegus. 
 *	All the Mackeltars are standing by somewhere, waiting. I hope that the team appears in Feversong. 
 *	Prince Cruce is still captive, although Seelie and Unseelie are trying to rescue him in an epic battle. God, I still miss V'lane... Please bring him back! 
 *	Ryodan is having tattooing sessions with Jada. I am so bored with these two characters. I never thought I would say this, but I miss Dani. She is so much less annoying than Jada. 
 *	Dancer is no longer a kid. I would like to see where his story is going as long as there is no love triangle with Ryodan and Jada. Boring and irrelevant. 
 *	Lor and Jo are still doing it and they will probably never stop doing it. Fine by me. Lor is my new hero :) 
 *	The Unseelie King and his concubine Aoibheal are still trying to remember each other. Seriously where is this story going? Is King going to help in the end? So far he is totally uninterested. 
 *	I suppose Kat and Kasteo are still doing what they are doing in the basement. At least, they are having fun. 
 *	We re-learn characters. Who is Alina? What is Shazam? Big surprises there. 
 *	Sweepers will be around tormenting Mac and Jada and are forcing Mac to make rushed decisions. The outcome of these decisions is waiting in Feversong. 
 *	Finally, the black holes are becoming bigger. The entire world is in danger, while the Song of Making is lost. 
 So, yeah many characters, many neverending stories, many points of view. I counted five points of view in the book: Mac, Jada, Christian, Lor and Papa Roach. 
 I honestly hope that things are wrapped up nicely in Feversong.