The Left Hand of Darkness

Genly Ai, an envoy of the galactic Ekumen federation, is trying to make contact with the inhabitants of the winter planet Gethen, where people become either male or female for only a short period once a month. Genly operates first in the kingdom of Karhide, and later in the totalitarian state of Orgoreyn, but on all of Gethen, only one person believes him…

One of the most famous books in the history of science fiction, it poses fundamental questions about the relationship between sexuality and the organisation of society, while also being a multi-layered story of dark and light, cold and warmth, loyalty and betrayal.