At first, I was confused a bit because the time frame is jumping around and I am not exactly sure how the Everneath works, and what the Tunnels are as well as what the history was between her and Cole and her and Jack. But this is intentional because the time shifts explain what I needed to know at every turn.
I liked Nikki's character, she is easy to get along with, and more reserved and quiet, which has always been me so that is my personality. Which part of her reservation is Nikki being emotionless(ish) as she comes back from the Everneath, but she gets her emotion back as she spends more time above.
The romance is kinda up in the air for me, because for the most part of the story, I knew that Cole wanted her to be Everliving with him, but otherwise his motives and feelings are kinda unknown to me. Jack is sweet and I would pull for him, but Nikki alludes to something happening between the two so I kinda hold off my feelings because I am afraid that he hurt her.
The emotions in this one are pretty powerful. We have Nikki hurt from the issue with Jack, that she forgot a lot while she was in the Everneath with Cole, we have love flying around everywhere, and we have the raw emotion of Nikki losing her mom, who died in a car accident. Nikki's family and friends were hurt because she disappeared and because she wasn't fully connected when she was back because even though she wanted redemption and to say goodbye, she also wouldn't let herself get any closer to them and at an arm's length.
The story started getting going and it raced to the end at a breakneck pace. I figured out who I wanted for Nikki, and I think that even though it seems there is a love triangle, I think that one ends up being a non--player although I may be proven wrong as I read more. But the ending, wow, it just cemented my love for this series and the man that won my heart.
I will definitely continue this series, and I am so glad that I finally got to it, and I recommend to any of my fantasy or paranormal romance friends because it is a good, emotional and unique story.
Bottom Line: Characters stole my heart!