X files plots

Mulder discovers that the black oil is extra-terrestrial. While investigating the use of the alien black oil, Mulder becomes an unwilling test subject in testing the vaccine. He also finds that Krycek has been working with the Russians. Scully is diagnosed with cancer, and Mulder believes it is a result of her abduction. Skinner makes a deal with the syndicate to find a cure.

Soon after, Mulder fakes suicide and tries to infiltrate the Pentagon. While Scully is dying of cancer, Mulder loses his faith in the existence of alien life. The duo meets Cassandra Spender, who claims to have been abducted multiple times, however, she soon goes missing.

The Syndicate attempts desperately attempts to find a vaccine for the black oil. Krycek infects Skinner with a nanorobot infection. Soon after, Mulder and Scully learn of a group of rebel aliens attempting to detroy all life on earth.

They mutilate their faces so as not to be infected by the black oil. The true goal of the Syndicate: to create a race of alien-human hybrids and aid in the colonization of earth by aliens.

While waiting for the invasion at a secret checkpoint, most members are killed by the rebel aliens. Later Mulder travels to Africa to investigate metallic artifacts found on the beach.

He becomes ill as a result of the objects, but also gains telepathic powers. Scully goes to Africa, and find a wrecked spacecraft buried in the sand. At the beginning of season 7 Mulder is still struggling to stay sane. After having found what appeared to be an alien spacecraft, Scully returns to D.

After returning to Oregon, the site of their first case, Mulder and several other abductees are kidnapped by the alien bounty hunter. Meanwhile, Scully reveals she is pregnant. Scully receives a new partner, John Doggett. After the collapse of their relationship, former FBI agents Fox Mulder and Dana Scully are reunited by a TV host who promotes conspiracy theories about the government and believes that alien abductions are actually false flag operations. S10, Ep2. A scientist working for the DOD commits suicide.

Mulder and Scully start an investigation only to discover a secret mutation experiment. S10, Ep3. Mulder questions his faith in the unexplained. He attempts to gather proof of the existence of the new creature he and Scully investigate before jumping to conclusions. S10, Ep4. Scully receives bad news about her family while away on a case. Mulder finds a strange paint sample at the crime scene which leads him to the left-handed artist that created the main suspect.

This brings back memories to Scully. The episode is even left open-ended as the mysterious Mrs. Paddock, the potential stand-in for the devil, just leaves town. Unlike most of the series, this episode doesn't center on an alien conspiracy or a traditional monster of the week. Instead, it centers on a deadly contagion. The scariness of the episode comes from the possibility of it playing out in real life.

A pharmaceutical company tries to experiment with an insect that kills its hosts, but they do so by sending a package to a prison inmate, which causes the contagion to spread as two prisoners escape. Mulder wants to tell the population at large the truth, but the government won't allow it to keep the spread of panic under control. This episode details the kind of conspiracy that feels more believable to the audience than the show's continued covering up of alien abductions.

Combining a story about plastic surgery with one about witchcraft, "Sanguinarium" is higher in the gross-out factor than it is the thrills, but it still deserves its spot amongst the scariest episodes. Mulder and Scully investigate what he thinks is a case of someone using witchcraft to curse doctors or patients, but that's not entirely the case.

Instead, the implication is that a plastic surgeon, on the quest for eternal youth, has somehow found it by making some of his patients his victims. It's also left open-ended as he evades the FBI agents on his trail.

Yes, it features a Monster of the Week in the form of a worm that may or may not be extraterrestrial, but the fear builds in the episode because of isolation and a lack of trust.

Mulder and Scully have to investigate an isolated group of researchers in Alaska. Everyone turns on one another, suspecting they're infected by the parasite in question, as they wait for a storm to pass. This would always lead to bad things, and in this case, it was a case that Mulder was called in to look at involving a man arrested for murder who was drawing gargoyles.

Mulder starts to question his own sanity as the FBI profiler constantly dismisses his ideas, and then the episode shows what happens when a person becomes the monsters that they hunt.

The fourth season episode "Leonard Betts" was scary for more than one reason. First up, there is the villain, Leonard Betts.

He was a decapitated corpse that got up and walked out of the morgue without his head. He then went home and regrew it, meaning he could change his look and remain free. However, outside of the fear from the monster itself was his revelation. He stays alive by feeding on cancerous tumors and will rip them out of his victims. When he tells Scully she has cancer, the fears become more than just about the monster.

There might not be anything scarier than creepy kids, and "Eve" has that terror doubled. This is an episode about genetic testing and cloning, and the clones here are the two twin girls, Teena and Cindy. This episode dealt with the Litchfield Project and creating super-soldiers, but these two girls are a frightening result. They have telepathic abilities and possess murderous urges.