The Labyrinth of Dreaming Books

It is two hundred years since the destruction of Bookholm, the City of Dreaming Hooks. Optimus Yarnspinner, who witnessed the disaster, has since become Zamonia's greatest writer and is resting on his laurels at Lindworm Castle. Spoilt by his monumental success, he one day receives a disturbing message that lures him back to the rebuilt literary metropolis.
On the track of the mysterious letter that brought him back to Bookholm, Yarnspinner finds himself not only reunited with old friends Inazia Anazazi the Uggly and Ahmed ben Kibitzer the Nocturnomath, but also introduced to the mysterious Biblionauts, the warring Fuppetists, and the city's latest craze, the Invisible Theatre.
Yarnspinner strays ever deeper into the Labyrinth of Dreaming Books, which seems to wield a strange power over Bookholm's destinies. He is eventually drawn into an irresistible maelstrom of events far more sensational than any of the adventures he has previously embarked upon.