Eragon
According to its author, "Brisingr" features a complex story with "weighty moral dilemmas" and "a sheer number of events that gives it a rich narrative." Halfway through the writing of the book, Paolini realized the story was so complex that it was going to end up being 2,000 pages. He decided to split it into two books, and thus the "Inheritance Trilogy" became the "Inheritance Cycle". Paolini revealed this decision in an October 2007 press release, and stated that his development as a writer since "Eragon" is what caused the book to become so complex.