Foreigner, written by C.J. Cherryh, is the first book in a long-running science fiction series that focuses on alien diplomatic relations. The story follows Bren Cameron, a human diplomat who is assigned to the alien world of the atevi. As the lone human among a complex alien society, Cameron must navigate cultural differences and political intrigue to maintain peace and understanding. Cherryh's meticulous world-building and intricate portrayal of alien culture make Foreigner a compelling read for fans of alien diplomacy in science fiction.