Ancillary Justice

Written by: Ann Leckie

First line: The body lay naked and facedown, a deathly gray, spatters of blood staining the snow around in.

Why you should read this book: Breq has a secret: she is not human, but the last remnant of a massive, two thousand year old artificial intelligence once controlled by a colonialist space empire, and Breq has a bone to pick with that empire. She doesn't understand why she's wasting her time rescuing Seivarden Vendaai, an officer who's hit hard times after a thousand years in cryostorage, but together they make their way through a dangerous universe, with Breq's unwavering focus on her goal pushing her forward to the next danger. The plot jumps back and forth between Breq's present day (far future) journey and the events of the last thousand years that precipitated her disenchantment with the culture that created her.

Why you shouldn't read this book: The world-building is so complex that it took me an embarrassingly long time to figure out what was going on and to get into the story, and I'm still not one hundred percent sure what the author is trying to do with gender here, even though it's clearly significant.