If the first book in this series, Promises, was good, the second one was even better. I think it was an amazing continuation of Eviana's story.In Betrayal we find a more mature Eviana, one that is trying to cope with everything that has happened to her. I admired her a lot in this book. Her parents are dead, she becomes clan leader and tries to stop a war, she's supposed to take care of her younger sister and her boyfriend left for God knows how long. I'd be terrified, angry. She was too, but she didn't let that fear and anger take over her. She found her strength in those feelings. What's not to admire? There was this moment where my heart broke for Eviana and I felt so much anger towards the people hurting her. I'm very curious how will she deal with those people in Arise, the final book in this trilogy.I loved the pacing. There's always something happening, usually something surprising. I liked that a lot, the fact that I couldn't predict anything. I have to admit that I thought the traitor was someone else entirely. So I was very surprised when I saw how wrong I was. But I loved that. And I love that we get to meet some new creatures and learn more about the syrenkas and their world.I love the cover (if you haven't noticed yet, this series has amazing covers!) and I think it's perfect for Betrayal.I have to find out what happens next and how the story ends. If you haven't read this series yet, don't wait any longer. It's amazing!