TL;DR: Lois McMaster Bujold is great, her Vorkosigan Saga has yet to disappoint, and 'Borders of Infinity' is terrific.

'Borders of Infinity,' a collection of short stories that slot between Volumes 5 & 6 of Lois McMaster Bujold's Vorkosigan adventures, is outstanding. Bujold's plotting, characterization, and tone combine for a rewarding and delightful experience. Additionally, Grover Gardner's audiobook narration is spot on, conveying Bujold's narrative voice without overwhelming her characters.

This volume comprises three short stories, all starring the deformed, brittle, brilliant, and audacious Miles Vorkosigan. In the first, Miles is dispatched the hinterlands of his family's feudal holdings. His mission: solve a murder and bring the killer to justice. In the second, a simple snatch and grab, meant to rescue an important scientist from the hands of evil men, turns into something much more terrifying, and ultimately heartwarming. And in the third, a mission to rescue a high-value military officer from a POW camp goes sideways in a most spectacular fashion. The stories are linked by an investigation into a pattern of cost overruns on his missions, and Bujold even brings off this tissue-paper connective narrative.

My favorite thing about these stories, as I've mentioned in reviews of others novels in the series, is the characters themselves. I like Miles Vorkosigan. I like his boss. I like his lieutenants. I like the people he usually ends up saving. Author Bujold strikes me as the kind of person who looks for the best in others, and I see that here. That said, she writes as if she's as astonished by Vorkosigan's latest scrape as anyone else. She makes one feel like she's as interested to see how things turn out as the reader!

In short, I think these books are the bee's knees. If you like science fiction even a little bit, you owe it to yourself to read (or listen to) the Vorkosigan Saga. That said, however, 'Borders of Infinity' assumes a certain familiarity with the main characters and their backgrounds. You might want to start back with "Shards of Honor" and go from there. You'll be glad you did.