50 shades of grey is a 2011 erotic novel by British author E. L. James. Set largely in Seattle, it is the first instalment in a trilogy that traces the deepening relationship between a college graduate, Anastasia Steele, and a young business magnate, Christian Grey. It is notable for its explicitly erotic scenes featuring elements of sexual practices involving bondage/discipline, dominance/submission, and sadism/masochism (BDSM).