
As Scully faces possible dismissal from the FBI, a manhunt ensues for the missing Agent Mulder.

As a government hit squad closes in on the agents, Mulder searches for clues about his father's involvement in a secret project.

The agents investigate the deaths of several young people who were apparently struck by lightning in the same small town.

A man with psychic powers assists the agents with the hunt for a killer.

Enemies of a prison inmate who died in the electric chair begin dying one by one.

The agents hunt for a killer who uses the internet to attract his victims.

A quadruple amputee becomes the prime suspect in a series of bizarre deaths.

A woman experiences a psychic connection with a teenager held captive by a deranged man.

An "alien autopsy" videotape and a Japanese diplomat's murder spark Mulder's search for a strange creature aboard a train. Scully encounters a group of people who reveal information about her disappearance.

When Mulder becomes trapped aboard a train rigged with an explosive device, Scully searches for the truth behind the government's involvement with secret experiments.

Scully attempts to protect a boy whose death could trigger the coming of Armageddon.

The agents come to the aid of a town seemingly under attack by killer cockroaches.

A rare alignment of the planets gives two teenaged girls dangerous telekinetic powers.

Mulder becomes obsessed with a case involving an incarcerated serial killer who claims he was possessed by a gargoyle.

The agents investigate the mystery surrounding a sunken World War II aircraft.

Mulder uncovers more clues about a government cover-up involving an alien entity and a sunken World War II aircraft. Scully pursues the man who murdered her sister.
Commentary by Chris Carter and Kim Manners

The agents play a deadly game of cat-and-mouse with a killer who can control people's minds.

A curse befalls members of an archeological team after a sacred urn is excavated in South America and transported to a Boston museum.

The agents investigate a deadly game in San Francisco's Chinatown district.

Scully recounts the investigation of an alleged UFO encounter for a famous author researching his latest novel.
Commentary by Rob Bowman and Darin Morgan

Skinner becomes the prime suspect in the murder of a prostitute.

Mulder suspects that a beast similar to the Loch Ness monster is responsible for the deaths of several people who reside near a large lake.

The agents investigate a series of murders linked to a device that alters television signals.

After his mother suffers a stroke, Mulder searches for an alien being who possesses miraculous healing powers.