
My rating: 4 of 5 stars
The exclamation points in my post title are not strictly required--the official book title has no punctuation and unlike David Malki !, Bujold does not appear to have attached an explanation to herself as a formal honorific. But I wanted to express some of the considerable satisfaction this book left me with even before I got to the meat of the review.
I thought "cryoburn" might mean Miles was battling the health effects of his death some books back, but for the first book in a while he's offworld, in full Imperial Auditor mode, at the height of his powers--which is to say the book starts with him wandering through pitch black catacombs, drugged and hallucinating, on a planet where he has no legal authority and has to rely on some possibly corrupt consulate officials as backup. Against him is the corporate elite and social system of an entire planet, so it's not what you'd call a very challenging case.
The planet itself is a world where more people are in cryosleep than alive, awaiting cures from disease and old age to be discovered and/or centuries of compound interest to accumulate before awaking so they will all pop up and live as an immortal leisure class. The planet is remarkably similar to Clifford Simak's Why Call Them Back From Heaven, though since Miles is an offworlder it only takes a few pages for him to realize everything is bonkers and resolving the mystery doesn't shake his core beliefs or anything.
Above average entry in the series. And if for some reason you only want to read one book about a world full of corpsicles this one, not Simak's, is the one to pick.