"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".
Plot
In the Norwegian Sea, chaos erupts on board the USS Ardent, an American destroyer escort. Due to mysterious yet unspecified events, half of Ardents crew board lifeboats and abandon ship against the captain's orders. Eighteen hours later, they are spotted by a Canadian fishing vessel; however, in that short span of time, the young crew members have undergone rapid aging.
Dana Scully (Gillian Anderson) and Fox Mulder (David Duchovny) visit the ship's sole surviving crew member, Lt. Harper, who has been quarantined at the Bethesda Naval Hospital. Scully finds that Harper, despite being in his twenties, has aged to the point of being unrecognizable. Mulder explains that Ardent vanished at the 65th parallel, a location with a history of ship disappearances. Mulder believes that a "wrinkle in time" exists there, and that Ardent was the subject of government experimentation related to the Philadelphia Experiment from World War II.
In Norway, Mulder and Scully get Henry Trondheim (John Savage), a naval trawler captain, to take them to Ardent'''s last known location. After crashing into the bow of Ardent, Mulder, Scully, and Trondheim find signs of advanced corrosion, even though the warship is only a few years old. Below decks, the party finds the mummified remains of several crew members. They also find the wizened commanding officer of Ardent, Captain Barclay, who claims that "time got lost" after his ship encountered a "glowing light" in the ocean. Trondheim's boat is stolen and his first mate is murdered.
Trondheim is later attacked by a Norwegian pirate whaler named Olafsson, who has not aged despite being on the ship for the past two days. Mulder, Scully, and Trondheim eventually begin to age unnaturally. Scully develops a theory that Ardent is sailing near a metallic object beneath the ocean, and that it has caused free radicals to rapidly oxidize their bodies and age them. When Mulder notices that the ship's sewage pipe is the only one not corroded through, the agents realize that something from the ocean contaminated Ardents potable water and led to the aging; Olafsson and his men remained unaffected due to their consumption of recycled water from the sewage system. Desperate to survive, Trondheim kills Olafsson after he reveals the secret, and sets out to keep the water for himself.