Spider Robinson is always a great read and this one is no exception. Come on in and meet Lady Sally and her REALLY off beat girls. There is always more here than meets the eye. Punsters will find special delight in Spider's books.
The Lady Sally Callahan books definitely show that Spider Robinson is a disciple of Robert Heinlein...with puns added. In this novel, The Lady hires a private investigator to find "the man who isn't there." I enjoyed the mystery, including most of the political analogies. I wasn't impressed with the way he segued into the second adventure, requiring the Lady's inner circle to save the world, though it was also an enjoyable adventure. All-in-all, it was a good book :o)
Another great novel in the Callaghan series! If you like Heinlein, you'll like this series (especially the last several). I had read books later in the series first, so this one filled in a lot of background that I didn't have. You don't have to read them in order..but it makes them more enjoyable!