The elements to create a good story are in place. Miles’ clone brother Mark is an excellent addition to the series, seeing as how he can act as a counterpoint to Miles himself. The character development and exploration in this book is on par with McMaster Bujold at her best. The plot, unfortunately, is not. It seems a bit forced, somehow. And while still an enjoyable read (this woman is a fabulous writer) it is weak compared to other installments in the series.
This novel is collected in the “Miles Errant” omnibus.