Once more Andre Norton whirls his reader far into space worlds of the future and adventures in inter-planetary intrigue. Young Troy Horan's home planet was razed during the recent War of the Two Sectors. Now a refugee on Korwar, his position is little more than a slave laborer until he becomes unwittingly involved in an espionage plot and is driven to a desperate escape attempt for freedom. He is aided by a bevy of humane if not human felines who communicate with him via thought transference. Matter-of-fact details and a fast-moving if somewhat murky plot are sure to absorb young science fiction fans.