During the run of the hit TV series The X-Files, many books based on it were released, written, including novels based on episodes, a series of comic books from Topps Comics, and many "official" and "unauthorized" non-fiction books.
Some of the novels, which were published in both hardcover and trade paperback editions, came out as audiobooks read by two of the series' stars, Gillian Anderson and Mitch Pileggi.