staff members had not read the script for themselves. After Ryan accepted the offer of becoming executive producer, Chris Nowak was hired as production designer, Ward Russell as director of photography and Bill Liams as construction coordinator. According to Ryan, they had secured all key personnel six weeks before principal filming began. Writing and casting Both Carter and Spotnitz wanted to make the film "bigger" than the series, so they decided to start and end the film at an "extreme place" and explain aspects of the story arc that the show had not. While gathering research materials, they learned that the Earth was once covered with ice and decided to open the film in Texas in 35,000 BC with human "Primitives" as the first characters to appear. The film included known actors from the show such as David Duchovny as Fox Mulder, Gillian Anderson as Dana Scully, Mitch Pileggi as Walter Skinner and William B. Davis as the Cigarette Smoking Man, as well as new actors and characters to the franchise. These included Martin Landau and Blythe Danner. The signing of these actors broke with what had become tradition for The X-Files. Carter had purposely cast virtually unknown actors for the television series, to make it more believable; "As soon as you put in an actor whose face is very recognizable, you've got a situation that works against the reality of the show." He saw creating the film as a chance to break this rule. He offered Glenne Headly the small role of a bartender. A fan of the show, she accepted enthusiastically. Set design Chris Nowak was hired as production designer for the film by Daniel Sackheim. Nowak was a former architect who had worked as a professional theater set designer for eight years, before moving towards the film business as an art director. Nowak had previously worked with Sackheim on a television production, which led to Sackheim contacting him to do an interview for the selection of a production designer. According to Sackheim, Nowak was hired because he was the only one able to create a "focused vision" for the film. Nowak wanted to start the design process after talking through the story with the filmmakers so that he could formulate "a sense of the atmosphere" which they wanted to create for the film. He wanted to create a "dark, scary and oppressive environment" for the characters, especially