The master has been unmasked. Rho's world has been turned upside down. With her loved ones in peril and all the stars set against her, can the young Guardian from House Cancer muster the strength to keep fighting? Or has she finally found her match in a master whose ambition to rule knows no limits?

New York Times bestselling author Romina Russell's epic sci-fi fantasy series ZODIAC reaches its breathtaking conclusion with THIRTEEN RISING, the highly anticipated fourth and final novel.

The master has been unmasked. Rho's world has been turned upside down. With her loved ones in peril and all the stars set against her, can the young Guardian from House Cancer muster the strength to keep fighting? Or has she finally found her match in a master whose ambition to rule knows no limits?

PRAISE for the ZODIAC series:
"ZODIAC is a thrilling YA fantasy for astrology lovers and sci-fi fans alike... You'll want to learn even more about your own sign after this one.” —Teen Vogue

"Russell’s excellent writing has only gotten better: her descriptions are deep and lush, her heroes fully formed and sympathetic." —Booklist 

"A thematically powerful ride.” —Kirkus Reviews

"With a stellar cast, fascinating mythology, and unexpected twists and turns, ZODIAC is a must read. I am a fan!" —Morgan Rhodes, New York Times bestselling author of the Falling Kingdoms series

"Russell's debut novel is rich with details of a society that is equal parts hard science and free-flowing faith, making it a great read for fans of both epic fantasy and sf. Fans of the immersive world of Zodiac will be happy to know that this is just the first in a series." —Booklist 

"Russell's narrative mixes intrigue, romance, and adventure, and a constant underlying tension drives Rho and her allies from one planet to the next." —Publishers Weekly

"The worldbuilding is a science fiction delight, with tons of details about space and science...Recommend this to sci-fi and adventure lovers. It has a bit of something for everyone." —VOYA

"A sci-fi refreshing for both its nondystopian plot and fallible heroine." —Kirkus