Totally disagree with various previous reviews. I can hardly wait for the sequel - When, Dan?!!!! Could not put the book down. The change from character and scene to another kept me turning pages. And how appropriate to read about Olympus Mons and Mars as we now are presently exploring Mars further. And loved his historical references to the Trojan war and the gods of Olympus. And his characters are all fascinating and complex as well as his scenic descriptions and well thought out and imaginative locations. One of his best. Actually, I think it is even better than Hyperion or Endymion.