From the ingenious creators of the Tomorrowland comes  The Sky of Sacrifice , a highly anticipated follow-up to The Great Library of Tomorrow , the epic first volume in the Book of Wisdom Trilogy. When secrets arise, friendships will be tested. As the Great Library of Tomorrow prepares for a momentous celebration, Nu embraces both newfound love and her role as the Sage of Truth. However, if fresh nightmares prove to be the harbingers of Suttaru's malevolent forces, romance must take a back seat to her responsibilities. When a savage act sends shockwaves through the Great Library, the return of an old friend brings to light a hidden relic from the Book of Wisdom's past. To stop the enemy, the Sages must pursue multiple paths. For Nu and Robin, this means traveling the realms in search of a mysterious figure from long ago. Meanwhile, Veer and his companions brave a realm of darkness and despair, where even the strongest can become undone ... "Vast and epic world-building. This is such a treat for bibliophiles and librophiles." -- T. L. Huchu, author of the Edinburgh Nights series "An epic fantasy with a story and characters that embrace the very heart of Tomorrowland in a magical tale of life, love, and unity." -- Steve Aoki on The Great Library of Tomorrow "An epic tale full of hope and light and wonder...You're in for a treat!" -- Sarah Beth Durst, New York Times bestselling author of The Spellshop , on The Great Library of Tomorrow “Book two of the Book of Wisdom trilogy has lots of action and explores both new and familiar areas of Paperworld. Readers who enjoyed book one will welcome a return to the world of the Great Library.” -- Booklist “The Great Library’s Sages gear up to battle the darkness once more, in the second volume of the Book of Wisdom trilogy.” -- Kirkus Reviews Rosalia Aguilar Solace grew up in Mexico City, the scion of a long line of writers. Finding Rosalia can be a challenge, as she splits her time between her hometown, where you might catch a glimpse of her writing in a bookshop café, and the Great Library of Tomorrow. But whether she's at home with family or researching future work, you can be sure of one thing: magical stories follow.