A young Gillian Anderson had only just gotten the confirmation that she got the role of her career and before the start of the shooting, she found out that she was pregnant. The studio bosses tried to replace the actress, but the executive producer Chris Carter was totally against giving the role of Dana Scully to someone else.

Her growing belly was covered by oversized clothes and good camera angles, but in the final stages, the plot changed. By the way, Gillian named her daughter Piper Maru, which is also the title of one of The X-Files episodes.