Humanity has been confined to the Solar System and a few severely overcrowded space stations by the Quill. Rumour says there was a single survivor of a Quill attack.
Good world building with an intriguing and exciting story. 2 minor complaints: the way the story was slowed down by Aaron and Gail's romance. I wish the author had chosen a different name for the aliens - I kept imagining people being massacred with obsolete writing implements.