Altered Carbon, written by Richard K. Morgan, is a noir-style science fiction novel set in a future where consciousness can be transferred between bodies. The story follows Takeshi Kovacs, a former soldier turned private investigator, who is hired to solve the murder of a wealthy man. In this transhumanist world, bodies are referred to as 'sleeves,' and the rich can effectively live forever by transferring their consciousness into new bodies. Altered Carbon explores themes of identity, mortality, and the ethical implications of technology.