Wanting to Believe: A Critical Guide to The X-Files, Millennium and The Lone Gunmen is a reference book published by Mad Norweign Press. Written by Robert Shearman and first published in August 2009, the book contains a summary, critique and star rating system for every episode in The X-Files, Millennium and The Lone Gunman television series, as well as the films The X-Files: Fight the Future and The X-Files: I Want to Believe. The book also incorporates an introduction by Shearman.