I received free e-copy from Edelweiss and the publisher in exchange for an honest review. 
 Reign of Shadows is a really good first book in the new series with interesting fantasy world and likable and complex heroine. Luna is a lost princess of Relhok who grew up in the tower with her two guardians after her parents, the King and the Queen, were murdered on the night she was born. On the same night Eclipse that plunged the word into perpetual darkness and allowed flash eating dwellers to come to the surface and terrorize and attack humans happened. 
 Luna is now seventeen years old and longs to escape the tower, explore the outside world, meet new people and make new friends. But the world is harsh and dangerous place. If the new King, former Chancellor who murdered her parents, discovers Luna is alive, her life will be forfeit. 
 During one of Luna's secret excursions she meets Fowler, a young man who lives and survives in the wilderness. Luna and Fowler are thrown together and form an uneasy alliance that grows into friendship and more. I liked Luna's character a lot. She is kind, intelligent but also stubborn and strong willed. Even though she grew up isolated and protected by her guardians, Sivo and Perla, she is selfless and always shows kindness to people in need. Our main hero, Fowler, survived in the harsh wilderness for two years and had closed off his heart to other people because everyone he ever loved had died but Luna manages to break his barriers and thaw his heart. I loved their relationship, their love was not instant and was more believable because of it. 
 Because this is the first book in the series there is quite a lot of world building and pacing was a little slow at times but it certainly was interesting enough for me to want to read the next book. I also want to know more about dwellers and the eclipse. What role did eclipse have in Luna's birth? I feel it has significance for Luna and her destiny that we have not discovered yet. The ending of the book has a major cliffhanger and I can't wait to know what is next for Luna and Fowler.