Philip Jose Farmer
Milton Firebrass, once Mark Twain's enemy and now his greatest ally, plans to build a giant airship that can fly to the North Pole of Riverworld. Once there, he hopes to learn the secret of the mysterious tower that dominates the landscape and find the answer to his most urgent question: could the tower contain the Ethicals, the enigmatic beings that created Riverworld?
Meanwhile, Jill Gulbirra is challenged for the job of piloting the airship by none other than Cyrano de Bergerac. As if there were not enough challenges facing the crew, they soon suspect there is an agent of the Ethicals among their number, plotting their destruction….
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“Farmer’s blend of intellectual daring and pulp fiction prose found a worldwide audience. Sprawling, episodic works gave him room to explore the nuances of a provocative premise while indulging his taste for lurid, violent action.”
—The New York Times
“The greatest science fiction writer ever.”
—Leslie A. Fiedler, author of Love and Death in the American Novel
“An excellent science fiction writer, far more skillful than I am.”