Hildegunst von Mythenmetz, hailed as Zamonia's greatest writer, is on vacation in Lindworm Castle when a disturbing message reaches him, and he must return to Bookholm to investigate a mystery. The magnificently rebuilt city has once again become a metropolis of storytelling and the book trade. Mythenmetz encounters old friends and new denizens of the city--and the shadowy "Invisible Theater." Astonishingly inventive, amusing, and engrossing, this is a captivating story from the wild imagination of Walter Moers.