 Gilligan himself inserted a reference to the villain Eugene Victor Tooms from the first-season episodes "Squeeze" and "Tooms" in a conversation between Ryan and Mulder.The episode guest stars Tony Shalhoub as Dr. Banton.Shalhoub, who had a recurring role on the NBC series "Wings", was not familiar with "The X-Files" when he was offered the part because at the time he did not watch much television.