And so we come to what seems to happen to every character with a long enough history--an evil twin. Such is Brothers in Arms, my latest read in the Vorkosigan saga. This one is on the short side, just under 250 pages. And it's OK that it's not longer--while it is well-written, this novel just doesn't seem to have a destination. There are several interweaving plots against Admiral Naismith, the most salient of which is a clone (the evil twin) under the control of a Komarran rebel. Miles foils the plots by treating Mark as a brother, basically, though it is obvious that is going to come back to bite him. His highly dynamic personality is not really on display in this book, though. It's just tough to engage. He does finally get it on with Elli Quinn, so we'll see where that goes.
My understanding from other reviews is that this is the low point in the series. It gets better again. Onward and upward, then.