Altered Carbon, written by Richard K. Morgan, is a noir-inspired science fiction novel set in a future where consciousness can be transferred to different bodies, known as sleeves. The story follows Takeshi Kovacs, a former soldier turned private investigator, as he is hired to solve the murder of a wealthy man. With its gritty depiction of a society where immortality is possible but only for the wealthy elite, Altered Carbon delves into themes of identity, class struggle, and the ethical implications of transhumanist technology.