Miles, with his usual flair. Three stories, framed by an interview with his boss.
The first one is a murder mystery on Barrayar, where Miles gets to unravel an infanticide case -- that being a burning issue. And two more when he's with the Dendarii, pulling off capers. (The frame story revolves about how the last two involved -- unexpected expenses.) Both are rescues, but very different in plot. And scope.
Some effects you will see results of in other books.