The Dark Design: The Third Book of the Riverworld Series (Riverworld, 2)

Philip José Farmer. A Tom Doherty Associates Book. Much has transpired since Earth's denizens found themselves resurrected along the shores of a river 22 million miles long. With the truth of this strange river's creators, the Ethicals, still shrouded in mystery, Sir Richard Francis Burton, Samuel Clemens, King John, and Cyrano de Bergerac face a fantastical voyage of discovery