How to review this larger-than-life story? At times I felt like I was reading an epic story comparable to Lord of the rings, other times it was more classic Midsummer Night's Dream. This series is about walking the line between old school fantasy and current day science fiction. And don't get me wrong I don't like sci-fi too much. Whenever it got too technical with machines in the Iron Realm, you would have Puck saying something old school like: "Great. The false king's fortress is a giant rabbit hole." 
 So yeah, I enjoyed The Iron fey series more then I enjoyed any series recently. And like I said during my review of The Iron King: best fae series. I haven't read tons, but Julie Kagawa beats the crap out of Melissa Marr and Aprilynne Pike. 
 This volume was a bit slower to start then the previous two. I confess I was a bit annoyed at the useless quest for a Token at first. But my patience was rewarded at the end for (view spoiler)[Paul's teaching to Meghan about his music. The key to the whole salvation of the realm and all. (hide spoiler)] That's what I have learned to love about Julie Kagawa's writing. Nothing is written for nothing, which is something that is taught in writing classes but hey, that not every author chooses to apply. 
 Oh and way before I forget: gorgeous covers for the three books. 
 Oh Prince Ash. *sigh* What a complex character and oh yeah dreamy. All I need to say is: 
 (view spoiler)[ "My name is Ashallyn'darkmyr Tallyn, third son of the Unseelie Court...Let it be known--from this day forth, I vow to protect Meghan Chase, daughter of the Summer King, with my sword, my honor, and my life. Her desires are mine. Her wishes are mine. Should even the world stand against her, my blade will be at her side. And should it fail to protect her, let my own existence be forfeit. This I swear, on my honor, my True Name, and my life. From this day on..." His voice went even softer, but I still heard it as though he whispered it into my ear. "I am yours." (hide spoiler)] 
 Drool 
 I also quite enjoyed Grimalkin's character. "Please attempt to use the brain I know is hidden somewhere in that head. [...] The light bulb finally comes on." Don't you want to hug him and pet him at the same time? 
 There are two things however that still bugs me. I am not complaining since this is so going on my favorite shelf but here are two questions for the universe: 
 (there might be spoilers here so beware) 
 1- If the power of Machina went to Meghan because she killed him and he chose to give her his power, how did Machina get Ferrum's power in the first place? 
 2- How did Meghan's power get unbound again? Oh that's right we don't know. Only Mab or Oberon could do it. They certainly didn't do it while they were exiling Meg and Ash so yeah I am confused.