Romina Russell’s Zodiac initiates a four-part YA sci-fi series centered on Rhoma "Rho" Grace, who navigates a galaxy divided by astrological signs to combat an ancient threat. The novel explores themes of leadership and identity as Rho, a citizen of House Cancer, assumes the mantle of Guardian to unite the Houses against the returning thirteenth sign. For a detailed review and exploration of the world-building, visit The Children's Book Review . Zodiac, by Romina Russell | Book Review