Join the library and raise hell in the first book of a stunning new fantasy series, where books unfinished by their authors reside within the Unwritten Wing of the devil's own library, and restless characters will emerge from out of their pages... When a Hero escapes from his book and goes in search of his author, Claire must track and capture him with the help of former muse and current assistant Brevity and nervous demon courier Leto. But what should have been a simple retrieval goes horrifyingly wrong, in a chase that threatens to reshape the boundaries between Heaven, Hell... and Earth.

The Library of the Unwritten in Hell was saved from total devastation, but hundreds of potential books were destroyed. Former librarian Claire and Brevity the muse feel the loss of those stories, and are trying to adjust to their new roles within the Arcane Wing and Library, respectively. But when the remains of those books begin to leak a strange ink, Claire realizes that the Library has kept secrets from Hell and from its own librarians. Claire and Brevity are immediately at odds in their approach to the ink, and the potential power that it represents has not gone unnoticed. When a...