the end of the eighth season. Although Anderson stayed until the end, Gish became a series regular. Minor recurring characters Glen Morgan and James Wong's early influence on The X-Files mythology led to their introduction of popular secondary characters who continued for years in episodes written by others: Scully's father, William (Don S. Davis); her mother, Margaret (Sheila Larken); and her sister, Melissa (Melinda McGraw). The conspiracy-inspired trio The Lone Gunmen were also secondary characters. The trio was introduced in the first-season episode "E.B.E." as a way to make Mulder appear more credible. They were originally meant to appear in only that episode, but due to their popularity, they returned in the second-season episode "Blood" and became recurring characters. Cigarette Smoking Man, portrayed by William B. Davis, was initially cast as an extra in the pilot episode. His character, however, grew into the main antagonist. Filming During the early stages of production, Carter founded Ten Thirteen Productions and began to plan for filming the pilot in Los Angeles. However, unable to find suitable locations for many scenes, he decided to "go where the good forests are" and moved production to Vancouver. It was soon realized by the production crew that since so much of the first season would require filming on location, rather than on sound stages, a second location manager would be needed. The show remained in Vancouver for the first five seasons; production then shifted to Los Angeles beginning with the sixth season. Duchovny was unhappy over his geographical separation from his wife, Téa Leoni, although his discontent was popularly attributed to frustration with Vancouver's persistent rain. Anderson also wanted to return to the United States, and Carter relented following the fifth season. The season ended in May 1998 with "The End", the final episode shot in Vancouver and the final episode with the involvement of many of the original crew members, including director and producer R.W. Goodwin and his wife Sheila Larken, who played Margaret Scully and would later return briefly. With the move to Los Angeles, many changes behind the scenes occurred, as much of the original The X-Files crew was gone. New production designer Corey Kaplan, editor Lynne Willingham, writer David Amann and director and producer Michael Watkins joined and stayed for several years. Bill Roe became the show's new director of photography and episodes generally had a drier, brighter look due to California's sunshine