Whoever possesses the Great Library of the Underworld rules Hell itself…and threatens the destiny of both the Heavens and Earth. The Great Library contains the most deadly magic tomes penned since the beginning of time. This magic is both wondrous and terrible, kept under lock and key by witch-librarians serving the king of the Underworld. Eve is one of those faithful librarians. She doesn’t recall her life prior to the Hellbrary, and unlike her fellow Hellbrarians, she has very little magic to speak of. When a dangerous book is stolen, she must recover it with the help of a Gorgon librarian, a hellhound, and a mysterious shapeshifting royal envoy. This daemon, Azarr, has a serpent tongue and the heart of a man – can he be trusted? King Caldrius’s court has fallen under siege. Caldrius’s cruel son, Ral, has returned from exile with an army to assassinate his father. But his father’s crown alone does not guarantee Ral the throne. He needs the library, and he will take it by force. His ambitions don’t end with the Hellbrary – he means to take Earth and the Heavens beyond. Eve knows there’s only one way to defeat Ral: they must use the recovered book to awaken the Queen of the Witches. Caldrius imprisoned Viridia millennia ago when she grew too powerful to control. Then, he offered the witches a choice: serve him or die. They served, until now…but will awakening Viridia summon an evil greater than Ral? Time is running out, and all the forces the Underworld must unite to wage war for the library and control of all of existence.