This is a classic science fiction novel by James H. Schmitz that first appeared in Analog Science Fact and Fiction. It tells the story of the beautiful and deadly martial artist Trigger Agree and her quest to find her associate Holati Tate. Tate disappeared after discovering the Plasmoids, ancient living machines that were banished to a far off part of the galaxy but no-one knows why. Will she succeed and unravel the mystery? Find out in this thrilling tale of adventure. This work is part of our Vintage Sci-Fi Classics Series, a series in which we are republishing some of the best stories in the genre by some of its most acclaimed authors, such as Isaac Asimov, Marion Zimmer Bradley, and Robert Sheckley. Each publication is complete with a short introduction to the history of science fiction.