Spoiler free review!! It is a really good read. Thalia is a main part of the book along with the hunters of artimis. Annaneth is lost and percy secretly joins thalias quest to save annabeth. Two new characters are also introduced: Bianca di angelo and nico di angelo. This book is better than the sea of monsters. The us cover art by john rocco is better than this cover but i'll make an acception.