in conception as the "believer" and the "skeptic". Of these, the "believer", Fox Mulder, was created with a character-defining personal motivation, involving the disappearance of his younger sister during his childhood, which he would believe to be a result of alien abduction. The creation of the "skeptic", Dana Scully, was influenced by Jodie Foster's portrayal of Clarice Starling in The Silence of the Lambs, leading the crew to decide that the character needed to seem "real", as opposed to the "bombshell" type of character the studio was pressing for. Thematically, although the series focused heavily on alien abduction lore, the decision was made early on to allow the plots of individual episodes to branch out into different territories in order to prevent the overarching plot from running out of momentum, which led to standalone episodes such as "Squeeze" being developed. The variety of storylines which the series has shown has led director Daniel Sackheim to note that "The X-Files has sort of found its own style in that it doesn't have a confined style to it", adding that the series' "fluid" approach has meant that "everybody who comes on the show attempt to make a little scary movie". To this end, several episodes feature varying plots, with alien-influenced storylines varying between "Ice", a "briskly-paced" episode set in a single location, and the character-driven "Conduit", which served to fill in background on the characters. Elsewhere, plots focused on soul transference or reincarnation, with the episodes "Shadows", "Born Again" and "Lazarus" sharing similar storylines. The plot of "Ghost in the Machine" featured a malevolent artificial intelligence; while "Shapes" introduced the first of what would become several Native American-themed episodes. The first season also introduced a number of minor characters who would go on to become central figures to the series—The Lone Gunmen, first seen in "E.B.E.", would become regular characters beginning the second season, eventually starring in the spin-off series The Lone Gunmen; whilst the episode "Tooms" introduced Walter Skinner, portrayed by Mitch Pileggi, who would go on to be billed as a series star by the ninth season. The abduction of Mulder's sister Samantha was explored in the episodes "Pilot", "Conduit", and "Miracle Man", and would go on to become one of the central themes of the series as a whole. Production Development California native Chris Carter was given the opportunity to produce new shows for the Fox network in the