The unearthing of an ancient Ecuadorian Amaru urn and its removal to America despite protests leads to a series of deaths linked to a shaman spirit released by the urn.

Mulder and Scully cross paths with two women who are identical and have followed each other across 17 states in the last three years, causing chaos and mayhem wherever they are.

When an unexpected person comes to Mulder's rescue, Mulder refuses to slip north over the border to safety. Instead, he heads southwest to the Anasazi ruins of New Mexico seeking a mysterious wise man who the Indians call "The Keeper of the Truth".

The Lone Gunmen call Mulder and Scully to a virtual reality development lab where they learn that one of the program testers was killed inside the computer generated game environment by the digital image of a woman. Needing to get his yah-yah's, Mulder enters the game to fight the woman, but Scully must step in to save him.

Mulder and Scully are contacted by a communications specialist from NASA who shows them evidence of sabotage in the space programme.

Mulder, back on the X-Files but alone for the first time, investigates a series of vampire-like murders in Los Angeles and finds himself falling for the one woman that may be the prime suspect.

In a small town in Idaho, a man is killed by what seems to be an invisible elephant. Mulder's investigation into the local zoo, its owners and a local animal rights group uncovers evidence of insidious alien experiments.

A mysterious dog thought to be the last of a rare Asian breed is responsible for several murders which Mulder and Scully are investigating. Now the agents have to find a way to stop the dog before it kills again.

Scully and Mulder investigate when an art gallery displaying offensive artwork is bombed, and need to discover a way to communicate with the comatose perpetrator to try and prevent a future attack.

Mulder and Scully learn that they aren't the only ones desperately searching for their long-lost son, William. The very fate of the world may depend on it.

After several African-American men are killed and the color is drained from their skin, Mulder learns about the Teliko, an African folktale about a creature who must suck the pigmentation from a persons body in order to survive.

After an FBI raid on a doomsday cult called the "Temple of the Seven Stars", Mulder meets Melissa, a cultist who claims to have known him in a previous life during the American Civil War. Scully believes the woman is a delusional schizophrenic, but Mulder allows himself to be drawn into her fantasies.

Snakes are killing the unrighteous, but Mulder and Scully doubt that this is a case of divine intervention.

While investigating human organ theft, Mulder and Scully uncover a mysterious cult consumed with macabre rituals.

It's Halloween, and Mulder and Scully are investigating the strange death of a corporate executive in a sophisticated high-tech building.

After a strange yellow rain kills a migrant girl, her family believes that a mythical creature el chupacabra was the cause and that it has manifested itself inside her fiancé's brother, who has since disappeared.

A man whose blood is rapidly changing into metal alloy enacts revenge on those who caused his condition.

When a real estate agent is shot inside a prison cell by someone who apparently fired from the roof, Scully and Doggett track him to two exterminators, one of whom has x-ray vision.

An Indian mystic whose son died in a chemical plant accident smuggles himself into the United States and takes his revenge on two families in suburban Washington, D.C.

When a stunt on a local cable reality show goes horribly wrong resulting in a man's death, Doggett and Reyes investigate. But when flies pour out of the victims eye sockets, they find themselves relying on Scully's expertise and ask her to join the investigation.

Mulder and Scully track a legendary creature that has roamed the New Jersey countryside for over forty years..

Mulder and Scully uncover strange occurrences in an elderly care home when one of the nurses is attacked by an unseen force she claims to be one of the 90 year old residents.

After a Jewish man is murdered in a Jewish community, his killers are murdered, too. Mulder and Scully have to determine whether someone is exacting vengeance or larger forces are at work.

A therapist working with children from abusive families is found to be implanting them with the memories of her own abuse suffered at the hands of her late father, when one of her patients tries to kill his stepfather.

Scully, Doggett and Reyes investigate an old case that Doggett worked on as a cop in Brooklyn, dubbed "The Screwdriver Killer". They try to determine whether the man who was convicted and has just been released from prison was actually the man responsible for the murders.