I enjoy listening to Spider Robinson read his own stuff. Not every author can pull it off, but Spider can. This is an engrossing and mostly good follow-up to the inimitable Stardance. There are broad similarities in plot, and one can see bits of Callahan's here too. She says vaguely, not wanting to have to check the spoiler box.It's a little too tidy, the ending, but not so tidy as to completely demolish what went before.