Falling between Moonwar and Jupiter, The Precipice details Dan Rudolph's next venture, the asteroid belt. In true Bova style hardcore science-fiction is less favoured than intrigue, political backstabbing and bouts of gung-ho heroism. The Precipice villains are underdeveloped and somewhat stereotypical and although the story has an interesting concept and finale, as a whole it is somewhat flat. It reads like a story-by-numbers rather than an insightful piece of sci-fi and although it's never dull, it is the weakest of the Grand Tour so far.