Nina is a delightful character - a great mix of romantic and scholar. She sees the world with such wonder and fun, and is a good foil to Tate who has seen some of the darker side of life. Recently burned by a bad relationship, he's not looking to get involved but Nina has a certain draw to her that he just can't resist.

As much as I loved Nina (and wish I could be more like her), Tate did take a little more warming up to. I also feel like, for all his fighting getting involved, he moved pretty quickly into falling in love. I think that his attitude either needed to be a little less adamant or a little more time spent in the progression of their relationship.

Overall though, it was definitely a minor quibble that was easily overcome by the great characters, the enjoyable interactions between them, and the nicely developed suspense element. Cross also nicely sets up more stories in the series and I'm ready to see what she brings us next.

(All opinions are my own.)