I totally loved this book! I had my doubts about it when I first read the synopsis since I thought the idea had been overdone already, and it couldn't have much originality to it but boy was I wrong! 
 I admit that the first few chapters were a little slow and I was confused most of the time, but it wasn't until we got to Nick telling the story that I was hooked. It was interesting to see that although he was an alien, he was smart and had all this knowledge in his head, was strong, and had super powers and all that stuff but he didn't know that he was an alien! Having Milo and NIck go trying to figure out who he was, and why he looks so much like Gabe DeWitt, was interesting. I especially liked every time we got to read in Nick's POV, because c'mon, who doesn't want to know what the love interests is thinking about? 
 And what a love interest he was! Besides the whole book ending in a cliffhanger, I was grateful that there wasn't a love triangle in this one at least. With Nick, it was hard to tell if he really cared for her or if, as he explained it, he just felt a connection to her. It wasn't until almost near the end, when he kisses her unexpectedly and then when he practically confesses to her that he likes her that we know that he loves her. For Milo, we already know that she's smitten with him, even after she learns that Nick is an alien and what they go thru at the end of the book. 
 This book was full of mystery and action, a little bit of romance, and had me laughing at certain parts. I always love it when a character's thought process has a little bit of sarcasm and jokes strewn about that makes the whole story enjoyable and brings a smile to my face. It was even more interesting seeing all the references to pop culture, per se, like video games and movies/shows, because it was something that I could relate to. 
 All in all, it was well written, even if there were some questions left unanswered regarding the whole alien thing, and the cliffhanger ending, I'm still looking forward to reading the next book, Trapped, in the trilogy. Hopefully that thing to humanity doesn't happen and NIck and Milo find a way to be happy together.