View on...

Amazon

Goodreads

Bookshop.org — Support local bookstores.

WorldCat — Find at a library.

On a distant future Earth where the human race has inexplicably dwindled to some three hundred members, a secretive person harbors a deadly secret that he or she is willing to kill in order to protect. By the Hugo Award-winning author of A Deepness in the Sky and A Fire Upon Deep. Reprint. 15,000 first printing.