Fifty Shades

Fifty Shades is an adult erotic BDSM romance franchise created by British writer E. L. James. It originated as a fanfic for the young-adult teen romance novel series Twilight by American author Stephenie Meyer. That story was turned into a full-length novel titled Fifty Shades of Grey. It has produced a novel series with an original novel trilogy and two follow-up novels, as well as a film trilogy.