This latest book was not on a par with his previous work. Pretty much everything about the book seemed contrived rather than flowing naturally. It was also predictable. Which wouldn't bother me normally but the book wasn't good enough to be predictable and enjoyable. A dissapointment and the last one of his I'll try for a while.
If you spend your free time at bars, and think that there is nothing greater than the wit and wisdom of a bunch of disfunctional drunks, then this is the book for you.
The Callahan series is about drinking. Since I don't drink, and kind of wish others wouldn't, either, I have curmudgeonly docked a star from my rating of this audiobook. But I have to admit the whole series does make me laugh. It gets a bit smarmy when it starts describing how all the tavern's patrons love each other so much that they can mind-meld, a la Vulcan. And why did we have to listen to a child-birth during the height of the adventure? I had to dock another star for that bit of gratuitous mush. Like I said: curmudgeonly. All the same, I would recommend the Callahan series to anyone who enjoys outlandish and funny science fiction. And Spider Robinson does an excellent job of reading his own book.