An unusual book in the Star Wars canon by Alan Dean Foster. It was written after A New Hope came out, before anyone was sure Empire would be made. It was written without Lucas' blessing (there is some debate as to his knowledge of the fact.) The book misinterprets some things, like excessive amounts of romantic tension between Luke and Leia, since the knowledge they were siblings was not available yet, but the book ended up staying true enough to the plotline to have been later officially made canon.