4.5 stars 
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 Review: 
 Protagonist: In the first installment to this series it seems as though Helen constantly needs to be saved, but in this installment she really comes into her own and begins to stand up for herself and others. Her strength comes not only from her Scion strength but from the love she has for those who have protected and guided her throughout her startling revelation from the first installment. Furthermore, she takes on her task to free all Scions from the terror and torture of the Furies with such determination and selflessness that I couldn't help but admire her strength. 
 Romance: With this installment comes a solid love triangle, and while it's still quite obvious who Helen will end, the introduction of this new character in Helen's life adds a bit more drama into the whole romance department. There's only one thing that I hate about the romance of this book and that is that with some simple math of when Ajax dies and when Helen was born would prove that she and Lucas aren't cousins and could be together. Don't get me wrong I actually like this whole "the think they're cousins and have to stay away from each other" thing, it reminds me of The Mortal Instruments, but I wish that we didn't know the truth and/or the explanation was a bit more complicated than Ajax died nineteen years ago and Helen just turned seventeen. 
 World-Building: Now with a prophecy for Helen to fulfill we get to see a bit more of the Underworld and we also get to see Helen's powers expand. We are also introduced to new villains and we get to see thing from their perspectives. With get to meet another Rouge, named Orion, and learn a large portion of his backstory. We also get to see some Greek gods and learn their true motives as well as where their loyalties lie. Finally we see development in the more mortal character of this series and learn the hoops they have to jump though to survive in a world full of Scions. 
 Predictability: Like the previous installment this one was pretty predictable. I'm sure part of it was my knowledge of Greek mythology that allowed me to catch onto some of the foreshadowing elements so depending on how familiar you are with Greek myths this book could range from slightly predictable to very predictable. There were a few times when I was caught off guard by something and even a time when I thought I got something wrong, but in the end I actually had it right. 
 Ending:The ending was also much like the previous one. It could have ended on a cliffhanger, but instead there it written a bit longer to cushion the blow that a cliffhanger would have left, thus making a wait until the next installment a bit less agonizing. The ending that could have been a cliffhanger is a game-changer and it comes to pass in a rather unexpected way and is also one of the least predictable scenes of this book which makes it all the better. 
 Rating: 
 This was so close to a full 5 star rating but there were a few things that irked me as I read and I couldn't give it a full rating. However it's still a great read and a wonderful follow up and second installment to a fantastic Mythology series.