Samantha Ann Mulder is a fictional character in the television series The X-Files. She is the younger sister of FBI Special Agent Fox Mulder and the daughter of Teena and Bill Mulder. As a child, Samantha was abducted, ostensibly by aliens, and was never returned. It is this experience that drives her older brother Fox Mulder to join the FBI, and later take the reins of the X-Files section.

"Paper Hearts" is the tenth episode of the fourth season of the American science fiction television series The X-Files. It premiered on the Fox network on December 15, 1996. It was written by Vince Gilligan, directed by Rob Bowman, and featured guest appearances by Tom Noonan, Rebecca Toolan and Vanessa Morley. The episode is a "Monster-of-the-Week" story, although it is tangentially connected to the series' wider mythology. "Paper Hearts" was viewed by 16.59 million people in its initial broadcast, and received positive reviews, with critics praising Noonan's guest role.