[Publisher Blurb] "As mental barriers wore down, I beheld great masses of thin vapour in various parts of the building and in the streets below. These steadily grew more solid and distinct, till at last I could trace their monstrous outlines with uncomfortable ease." From unguessable aliens to cone-shaped librarians to beetle-conquerors, the Great Race of Yith takes many forms. Learn to recognize them, before they take yours!