The 100 is a young adult science fiction book series by Kass Morgan. The first volume in the series, The 100, was published on September 3, 2013, by Little, Brown Books for Young Readers. The fourth and most recent volume of the series, Rebellion, was released on December 6, 2016. Prior to the publication of the first book, television producer Jason Rothenberg became interested in adapting the story for the screen. The eponymous TV series adaptation premiered on March 19, 2014, on The CW Network