The X-Files (1993– )
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Sein und Zeit 

The strange disappearance of a little girl leads Mulder to make connections with previous unexplained cases of missing children. Scully believes he is becoming obsessed with the case by associating it with the abduction of his sister.


(as Michael Watkins)


(created by), | 1 more credit »

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Episode cast overview, first billed only:
Bud LaPierre
Billie LaPierre
Megan Corletto ...
Harry Bring
Kathy Lee Tencate
John Harnagel ...
World Weary Dad
Marie Chambers ...
John Bisom ...
News Anchor #2
Nancy Tiballi ...
News Anchor #1


Mulder requests to be put on the case of a seemingly routine child abduction case of a missing little girl. Mulder finds a connection between this case and old x-files involving missing children. Scully believes that Mulder is personalizing the case, relating it to the abduction of his sister Samantha. Written by Muldernscully

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TV-14 | See all certifications »




Release Date:

6 February 2000 (USA)  »

Filming Locations:


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Sound Mix:


Aspect Ratio:

1.78 : 1
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Did You Know?


'Sein und Zeit' is the original title of German philosopher Martin Heidegger's influential 1927 book 'Being and Time'. See more »


Interstate 74 does not go all the way West to California; it ends at a junction with Interstate 80 in Davenport, Iowa. It also does not run North-South, as the sign indicates. It runs East-West, as all even-numbered highways do. Odd-numbered highways run North-South. See more »


Scully: Don't go looking for something you don't want to find.
See more »


References SpongeBob SquarePants (1999) See more »


The X-Files
Written by Mark Snow
Performed by John Beal
See more »

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User Reviews

Mulder once again questions what happened to his sister despite so much evidence pointing to what we all know. I'm
13 January 2017 | by (United States) – See all my reviews

Okay, so this was a good episode except for one thing. They once more did the bs with Mulder deciding his sister wasn't abducted by aliens but was instead taken like these other kids. Are we to believe he's that stupid after all of this? He freaking met her clones on more than one occasion! That includes clones of her as a child as she was when she was taken! He's seen enough about the alien conspiracy and learned from Cassandra about those that were taken by the aliens. They can't keep milking the whole "Mulder hangs onto hope that something else happened to his sister" when he's seen too much evidence to the contrary. They could've used her as fuel for Mulder's delving into the case without him rethinking her disappearance. It's just becoming a huge plot hole. This is otherwise a great, suspenseful episode. But I had to take points for the previously mentioned points.

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