Mirror Dance

The Vorkosigan books have mostly been sci-fi adventures, lots of action with clones, pirates, princesses, culture clashes, and a few Big Ideas, like the patriarchal society in Ethan of Athos. This book has all of that stuff, but takes a sharp turn into psychological horror. Mark's journey was masterful storytelling, and also deeply uncomfortable. Bujold is excellent at character, and the awards she has won are well deserved. But if a book ever needed to come with ALL the trigger warnings, it is this one.