From its beginnings in Twilight fan-fiction to its record-breaking sales as an e-book and paperback, the story of the erotic romance novel Fifty Shades of Grey and its two sequels is both unusual and fascinating. Having sold over seventy million copies worldwide since 2011, E. L. James's lurid series about a sexual ing nue and the powerful young entrepreneur who introduces her to BDSM sex has ingrained itself in our collective consciousness...