They encounter the evil Campbell, who is also seeking to retrieve the lost book, to allow him to return to the Forbidden Zones, areas of the world hidden from humanity (excepting London taxi drivers).
book | American comic book | Domesday Book | National Book Award | Ultimate Fighting Championship | Book of Genesis | Book of Exodus | Book of Common Prayer | children's book | Book of Revelation | The Jungle Book | Golden Book of Cycling | The Ultimate Fighter | Book of Isaiah | The New York Times Book Review | picture book | Yellow Book | Book of Ezekiel | Doomsday Book | Book series | Ultimate Spider-Man | The Yellow Book | Book of Job | Project Blue Book | Book frontispiece | The Ultimate Warrior | National Book Critics Circle Award | Limca Book of Records | comic book artist | Book of Concord |