Since becoming published, Butcher has written two series: The Dresden Files and Codex Alera. Codex Alera has ended after six novels and The Dresden Files are still ongoing; he has also written a Spider-Man novel, entitled The Darkest Hours, released on June 27, 2006. In addition, he contributed a short story for publication in My Big Fat Supernatural Wedding with Charlaine Harris and Sherrilyn Kenyon, among others, released in October 2006. He has since contributed to the anthologies Many Bloody Returns in September 2007 and My Big Fat Supernatural Honeymoon in December 2007. In October 2008, he released another short story in Blood Lite and a novelette, Backup, illustrated by Mike Mignola.