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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...