Radiant Sky is a fitting and good end to this series. I enjoyed it and was taken on the ride right along with Skye. It was so hard to see Skye chose against the man she loves in order to do what is right, where her heart is leading her, and what her parents fought and sacrificed for. Her and Asher's hearts were so hurt and broken and that was emotional to read about. One thing though that I didn't understand is why Asher couldn't have chosen silver and to follow her. It was awesome though how there were steamy moments that sustained me and as usual made my heart beat faster. I loved Earth, she was a great new character. She was fleshed out well and smart beyond her years. There was also an old character who turned out to be a unlikely alliance and I was surprised how much I grew to like her and what she contributed to the story. Cassie is a welcomed relief in the comedic area. Though she was serious when she needed to be, her loyalty and character shined through. The ending wrapped everything up really well, though I didn't like who ended up dying. Bottom Line: Good series ending.