The damaged Jem'Hadar ship crashes on a planet. Dax is seriously injured, but kept alive by Dr. Bashir. A group of Jem'Hadar who also crashed on the planet finds them.
When several research scientists are found frozen to death, Mulder and Scully being to suspect the murders may have been committed by a time traveler from the future.
While trying to find a cop killer, Jarod tells Miss Parker that Mr. Lyle is still alive, leading to the discovery that the ex-operative stole sensitive information that could jeopardize the Centre.
