"An alien armada lurks on the edges of Teixcalaanli space. No one can communicate with it, no one can destroy it, and Fleet Captain Nine Hibiscus is running out of options. In a desperate attempt at diplomacy with the mysterious invaders, the fleet captain has sent for a diplomatic envoy. Now Mahit Dzmare and Three Seagrass - still reeling from the recent upheaval in the Empire - face the impossible task of trying to communicate with a hostile entity....

Basit Deniau's houses were haunted to begin with. A house embedded with an artificial intelligence is a common thing: a house that is an artificial intelligence, infused with a thinking creature that is not human? That is something else. But now Deniau's been dead a year, and Rose House is locked up tight, as commanded by the architect's will: all his possessions and files and sketches are confined in its archives, and their only keeper is Rose House...