SPOILER ALERT: Do not read this review if you have not read The Immortal Rules!Julie Kagawa has done it again. Need I say more? Okay, well if that's not enough to get you to read The Eternity Cure, I'll keep going.The Eternity Cure picks up a few months after the end of The Immortal Rules. Allison has left Zeke in Eden and now she is on her own, searching for Kanin. She's sure he's still alive but she's not sure how much longer he'll be sane. She's determined to save her sire no matter what, even if it means teaming up with one of her enemies. However, things are only going to get worse for Kanin and everyone in New Covington. Now, not only does Allison have to save her sire, she also has to save the world (or what's left of it.)So it's safe to say that Julie Kagawa really ups the stakes in The Eternity Cure. Now, not only is Kanin's life on the line, so is everyone else's, human and vampire alike. Allison sets out to save her sire but along the way she also gets roped into saving the rest of the world from Sarren and his crazy new virus. The tension in this book was crazy! First, Allison has to team up with crazy Jackal to try and save Kanin. Then she has to team up with someone from her past to save the world. And as if that's not enough, she then has to face her past and one key person from it. The Eternity Cure is pretty much just surprise after surprise. Sure, I saw a few of them coming but most of them I didn't. I was shocked at some of the characters that ended up playing a pretty big role in this book. I was also shocked at how far Julie Kagawa takes things with her characters. She's not afraid to tear apart readers' hearts. (She does kind of put them back together again though!)The story is rather slow but I've come to expect that from Julie Kagawa. I didn't feel that a 100% fast-paced story was necessary in this case. There's still a lot of world-building that needs to be done and a lot of that is taken care of in this book. There's also a lot more history included, like what really happened with the first Red Lung virus. Because of this the crazy things that happened really meant more to me since they kind of came out of nowhere. Just because there was a lot of information packed into the story didn't mean that Julie Kagawa left out the awesome fight scenes we've come to expect from Allison and her trusty katana. There was no shortage of virus-infected people attacks and molemen attacks! I truly felt that The Eternity Cure was the perfect mix of informative and action-packed. Also, I can't go without mentioning the characters. I admit that I got a little peeved with Allison. Ever since leaving Zeke in Eden she reverted back to her original vampire nature. She just seemed so unfeeling and cold. However, this side of Allison didn't last forever and I enjoyed seeing her changing throughout the book. As for Jackal, he's the same as ever. I hate to admit it but I kind of found him funny. He's totally an ass and I kind of wanted him to die at parts but he also cracked me up. Then there is Sarren. Holy crap, Julie Kagawa knows how to write a villain. Sarren is crazy with a capital C. He takes pleasure in other people's pain and he doesn't hide that. He is set on revenge and he will do whatever it takes to get it. He creeped me out so much! The Eternity Cure just has an all around fabulous cast of characters.Now, if you're like me, you won't be able to resist reading this one as soon as you get your hands on it but fair warning, the ending will kill you. Like I said, Julie Kagawa kind of breaks your heart with this one. The ending completely took me by surprise and left me with my mouth hanging wide open. I couldn't believe it. I wanted to cry and scream but above all I just wanted to beg for the next book. The wait is going to be killer for anyone who reads it but I just know it's going to be worth it.Overall, The Eternity Cure gets all the stars (or in this case, shoes.) I cannot get enough of Julie Kagawa's books. Get a copy of this one and read it as soon as possible!