Fifty Shades Darker is a 2012 erotic romance novel by British author E. L. James. It is the second installment in the Fifty Shades trilogy that traces the deepening relationship between a college graduate, Anastasia Steele, and a young business magnate, Christian Grey. The first and third volumes, Fifty Shades of Grey and Fifty Shades Freed, were published in 2011 and 2012, respectively. The novel is published by Vintage Books and reached No. 1 on the USA Today best seller list. Source: Wikipedia (en)