What Will Happen in Eragon IV, subtitled Who Lives, Who Dies, Who Becomes the Third Dragon Rider and How Will the Inheritance Cycle Finally End? is a work that analyzes Christopher Paolini's Inheritance Cycle and attempts to use this analysis to make predictions about the future of the series, particularly the final installment of the main series, Book IV. It was written by Richard Marcus, a blogger and literary critic who lives in Kingston, Ontario and also serves as the editor of the magazine Epic India. It is available in paperback and Amazon Kindle formats, published on October 13, 2009, ISBN 978-1-569-75728-4.