Død Kalm

"Død Kalm" is the nineteenth episode of the second season of the American science fiction television series The X-Files. It premiered on the Fox network on March 10, 1995. The story was written by Howard Gordon, the teleplay was written by Gordon and Alex Gansa, and the episode was directed by Rob Bowman. The episode is a "Monster-of-the-Week" story, unconnected to the series' wider mythology. "Død Kalm" earned a Nielsen household rating of 10.7, being watched by 10.2 million households in its initial broadcast. The episode received mostly mixed-to-positive reviews.

The show centers on FBI special agents Fox Mulder (David Duchovny) and Dana Scully (Gillian Anderson) who work on cases linked to the paranormal, called X-Files. In the episode, Mulder and Scully are called in when a boatload of survivors from a U.S. Navy destroyer escort are found. What particularly catches Agent Mulder's attention is that all of these sailors appear to have aged many decades in the course of a few days. Mulder and Scully travel to Norway where they find a civilian fisherman who is willing to take them to the ship's last known position.

"Død Kalm" was written to make use of the show's access to a navy destroyer that had previously featured in "Colony" and "End Game." The episode was originally intended as a way to give the production crew a rest after several demanding episodes had been shot, but the episode became one of the more difficult to film during the second season. The episode's title evokes that of the suspense film Dead Calm in a Norwegian-inspired form, joining the Norwegian død (dead) with a recognizable but Norwegian-styled respelling of the word "calm".