The Edge Chronicles

The Edge Chronicles is a children's fantasy novel series by Paul Stewart and Chris Riddell. It consists of four trilogies, plus four additional books, and other books related to the universe (The Edge). Originally published in the United Kingdom, this series has since been published in the United States, Canada and Australia. To date, more than three million copies of the novels have been sold.

The stories of The Edge Chronicles take place in the fictional world of The Edge, a vast cliff with no apparent bottom. The majority of books are grouped into trilogies, with each trilogy focusing on one character. The series covers a 600 year period, divided into three "Ages of Flight". The power of flight is a major theme of the books, with each age defined by the current technology used for air travel. The series is notable for its detailed flora and fauna, along with the maps of various locations in the edge.

The first three trilogies were released over the course of 1998 to 2006, with a final standalone book serving as a conclusion to the trilogies released in 2009. The series was planned to end after the tenth book, with the authors blog, Weird New Worlds serving as the continuous adventures of minor characters within the universe. After the completion of the 66 chapters of the blog, the authors decided to revisit the series with the fourth trilogy which would adapt the characters and stories from the blog, with the first and second books released in 2014 and 2015 respectively. The series also includes a number of short stories, along with a companion book.