A young FBI agent is assigned watchdog duty over a fellow agent, but finds herself drawn into his investigations of paranormal and unexplained phenomena.
While negotiating a tense hostage situation, Mulder finds himself sympathizing with a gunman who claims to be the victim of alien experimentation.
The agents face their old foe, Alex Krycek, while pursuing a radioactive entity unleashed from a sunken WWII wreckage.
When Lt Colonel John Sheppard receives word that his father has died, he returns to Earth. Once there, he becomes embroiled in a covert and dangerous experiment gone awry.
Rachel is taken hostage during a bank robbery.