I thoroughly enjoyed the first book in the series, The Immortal Rules, and was hungry for more, so I was delighted when this book popped up on LitPick! The Eternity Cure features mostly the same characters from book one, and is written in the same style, but builds upon the world and concepts in book one. I highly recommend reading book one before this. The strengths of book one are all mostly here. Allison was already likeable before, but she grows stronger and more independent here. Jackal is a great supporting character with personality. Zeke is still meh, but he's getting there. Sarren is a convincing villain that you love to hate. The descriptions of fights in this book are also worth a mention. Kagawa describes so eloquently that you never get tired of reading them, and believe me, there are a lot of them. However, there's a lot of filler as well. This occurred in book one too. The Eternity Cure is 400+ pages and has a relatively short climax. Much of the beginning is difficult to get into due to the lack of action, and when the action comes, it is all clustered together. If not for this, The Eternity Cure would've been a five-star read. As it stands though, The Eternity Cure was well worth my time and I will be reading the next book in the series as soon as I am able.