I have to admit right off the bat, this book reminded me of Twilight. The way Megan and Adam meet, how they fall for each other, how unreasonably attractive Adam is to everyone, especially Megan; definitely reminiscent of Twilight, albeit, without the epic appeal Twilight gave me. 
 I didn't know what to expect going into this. The description doesn't really give you much, which can be a good and/or bad thing, but either way, I like that Leigh didn't keep us waiting too long before bits a pieces were revealed about the characters and plot. I hate authors who drag it on until the very end and then bombard us with all this information and end with a cliffhanger. Here Leigh plays the mystery card long enough to build momentum and intrigue, then reveals things in a smooth fashion which I enjoyed. 
 The relationship between Megan and Adam was very cute at first, like a typical high school crush thing. Probably the only thing I didn't like about it was how quickly it grew into deep, everlasting, meant-to-be love that they kept assuring everyone, including themselves, it was. Don't get me wrong, I loved those steamy and sweet moments between the pair, but found their love to be a bit unbelievable. 
 The whole "Marked" premise was a bit confusing to me. The book talks about genetics and basically a system that ensures the "Marked" gene gets passed along and those with special abilities are created. The whole process wasn't really explained well for me, but it didn't really deter me from enjoying the book. I enjoy any story that involves those with special "mutant" abilities so that part definitely drew me in. 
 I do love a book that has memorable and fun secondary characters. This is one of them. From Megan's friends to the DeRis family, I loved each of them, especially Aine, Rian, and Caitlin. Very interesting characters that add fun and excitement to the story. Everything fit together very nicely, Leigh has done some excellent writing, and I'm very eager to see how it continues in the next book.