Stories from the set

In episode 1x13 "Gender Bender", at the 5th minute, when Mulder examines the corpse, you can see this "corpse" blink.

In the second episode of the second season, the first victim has a tattoo on their arm: the inscription “DMITRY” in Cyrillic. But instead of the Russian letter M, there is an English W. Later, in the photograph that Scully shows Mulder, the mistake is corrected. At the same time, the inscription on the arm and in the photograph differ in that on the arm all the letters are filled in, whereas in the photo the first letter I is only partially filled in.

Mulder's phone number in the series is 555-0199. This number also belongs to the Berman family in the film «American Beauty» (1999). And the same phone number is left by Al Pacino on Russell Crowe's answering machine in the film «The Insider» (1999).

Mulder uses a Glock pistol (in the first season), as well as a Walther in an ankle holster. Scully uses only a Walther PPK/S.

The series is mentioned in Stephen King's book "The Girl Who Loved Tom Gordon".

Nicholas Lea, who played Alex Krycek starting from the second season, can also be seen in episode 1x13 "Gender Bender," where he appears as one of the victims; Scully and Mulder interrogate him in the hospital at around the 35th minute.

In the first episode (Pilot), the person sitting behind Scully on the plane is David Duchovny's father.

Throughout the series, Fox Mulder and Dana Scully use rental cars. The company providing the cars is always the same and is called Lariat (as indicated by the bumper stickers on the agents' cars).

The second episode of the ninth season (Nothing Important Happened Today II) is dedicated to Chad Keller, as stated before the episode's end credits. Chad Keller was a scientist working in the aerospace industry and was a close friend of Chris Carter and his wife. He died during the terrorist attack in New York in September 2001.

The vessel "Piper Maru" with a classified route also appears in the film "Alien vs. Predator" (2004).