The Year of the Flood was released on 7 September 2009 in the United Kingdom, and 22 September 2009 in Canada and the United States. Though chronicling a different set of characters, the follow-up expands upon and clarifies the relationships of Crake with Oryx and Jimmy with his high school girlfriend Ren. Glenn makes a brief appearance. It also identifies the three characters introduced at the end of the original, and finishes the cliffhanger ending.
The third book in the series, MaddAddam, was published in August 2013.[23]
