Archangel's Consort by Nalini Singh is another excellent book in the Guild Hunters series. Fans will be thrilled to see the attention given to the relationship between Raphael and Elena in this novel. It is emotionally charged with a story that will grab your attention from the first page and hold on until the end. Nalini Singh has talent to spare. The world she creates is completely original and the characters are outstanding. She weaves together a story that you'll remember long after you finish it and you'll find yourself counting the days until the next book is out. 
 If you're new to the series, start with the first book in the series, Angel's Blood and read in order from there. Archangel's Consort and the Guild Hunters series is highly recommended for fans of Urban Fantasy Romance.