Trong bộ phim, đặc vụ FBI Fox Mulder (David Duchovny) do muốn tìm lại người em gái mất tích của mình, đã dấn thân vào điều tra tại "X-files" với niềm tin rằng em gái của anh đã bị bắt cóc bởi người ngoài Trái Đất. Mulder rất tin tưởng vào sự tồn tại của người ngoài Trái Đất trong khi người tham gia điều tra cùng Fox Mulder là đặc vụ Dana Scully (Gillian Anderson). Ban đầu, Scully không tin vào những điều mà Fox Mulder nói, nhưng với những bằng chứng cụ thể cùng với những vụ án thực tế cô và Mulder trải qua, dần dần Scully đã tin vào những hiện tượng kỳ bí.
Tuy nhiên, tới cuối phim thì nhân vật Fox Mulder xuất hiện ít hơn và có thêm sự xuất hiện của một nhân vật chính khác là đặc vụ John Doggett (Robert Patrick). Tới phiên mình, John Doggett lại nghi ngờ tính xác thực của các vụ án trong X-files và lúc này, chính đặc vụ Scully là người đã khiến cho John Doggett dần dần tin vào X-files
The Blessing Way (2) 8.0
Ngày phát sóng: 1995-09-22
Thời lượng: 45 min
Tổng quan: Scully finds her career with the FBI in jeopardy as Mulder is still missing and the Cigarette Smoking Man is pursuing the stolen files. The Navajo elders find Mulder's body in a cave and perform an ancient ceremony to call the spirit back to the empty vessel.
Paper Clip (3) 8.3
Ngày phát sóng: 1995-09-29
Thời lượng: 45 min
Tổng quan: A.D. Skinner and Scully are at a standoff when Mulder bursts in and discovers that Skinner has the digital tape. Reunited, Mulder and Scully travel to a secret vault inside a mine and find an elaborate filing system of medical records which reveals that Mulder's sister may not have been the first choice for abduction. Meanwhile, Skinner deals with the Cigarette-Smoking Man for their safety.
D.P.O. 7.6
Ngày phát sóng: 1995-10-06
Thời lượng: 44 min
Tổng quan: Mulder and Scully investigate a series of human and cattle deaths by lightning and are led to a teenage boy who is the only survivor out of five people recently hit by lightning strikes.
Clyde Bruckman's Final Repose 8.4
Ngày phát sóng: 1995-10-13
Thời lượng: 45 min
Tổng quan: In the midst of a psychic sideshow while on a murder case, Mulder and Scully enlist the help of a man who may have a true psychic ability to foresee how people will die to help the agents catch a man killing fortune tellers.
The List 7.0
Ngày phát sóng: 1995-10-20
Thời lượng: 45 min
Tổng quan: Nobody takes much notice when a death row inmate vows on the electric chair to come back from the dead and kill five men who have wronged him during his time in prison, until a guard is mysteriously murdered in the former inmate's cell.
2Shy 7.2
Ngày phát sóng: 1995-11-03
Thời lượng: 45 min
Tổng quan: A man with a genetic abnormality who must prey on overweight women in order to suck the fatty tissue from their bodies, begins to meet his victims through internet chat rooms.
The Walk 7.1
Ngày phát sóng: 1995-11-10
Thời lượng: 45 min
Tổng quan: After a suicide attempt and multiple murders at a military hospital, Mulder and Scully meet a quadruple amputee who has gained the power of astral projection and is taking out his personal frustrations on his commanding officers.
Oubliette 7.3
Ngày phát sóng: 1995-11-17
Thời lượng: 45 min
Tổng quan: Mulder seeks the help of a woman who he believes has a special connection with a young girl who has recently been kidnapped by the same man who held her captive many years earlier.
Nisei (1) 8.1
Ngày phát sóng: 1995-11-24
Thời lượng: 45 min
Tổng quan: An investigation into a video of an alien autopsy puts Mulder and Scully in the middle of a conspiracy involving WWII Japanese scientists brought to America to continue their experiments which may shed light on Scully's abduction.
731 (2) 8.2
Ngày phát sóng: 1995-12-01
Thời lượng: 45 min
Tổng quan: Mulder is trapped inside a train car which contains a suspected alien-human hybrid and also a bomb, while Scully pursues the truth about her abduction and the mystery behind the implant in her neck.
Revelations 6.9
Ngày phát sóng: 1995-12-15
Thời lượng: 45 min
Tổng quan: Mulder and Scully swap roles as they pursue a man killing priests that claim to have the wounds of Christ. The agents find and must protect a young boy who may be a real stigmatic. While Scully's faith draws her close to the boy, Mulder is convinced of another explanation.
War of the Coprophages 8.4
Ngày phát sóng: 1996-01-05
Thời lượng: 45 min
Tổng quan: Widespread panic is caused in a small community after numerous deaths are linked to killer cockroaches, and a government agricultural agency is discovered to have set up a secret experiment involving insects.
Syzygy 7.0
Ngày phát sóng: 1996-01-26
Thời lượng: 44 min
Tổng quan: A rare planetary alignment causes strange behavior in the residents of a small town, but particularly in two teenage girls who were born at the exact same moment on that date. While investigating the strange occurrences Mulder's interest in the local female detective makes Scully jealous.
Grotesque 7.3
Ngày phát sóng: 1996-02-02
Thời lượng: 45 min
Tổng quan: A serial killer is captured after a three year manhunt, and he claims an evil spirit is responsible for the crimes. When the killings continue as he sits in jail, Mulder's battle with a former colleague gets more heated when he suggests that something more paranormal may be involved.
Piper Maru (1) 8.1
Ngày phát sóng: 1996-02-09
Thời lượng: 45 min
Tổng quan: A French salvage ship searching for a lost WWII fighter plane unknowingly surfaces an alien which appears in the form of black oil and has the ability to jump hosts. Mulder heads to Hong Kong to investigate the salvage broker who sold the information to the French and he encounters Krycek, who has been selling information from the MJ documents. As Mulder prepares to take Krycek back to the US, the alien makes its way to Hong Kong and takes control of Krycek.
Apocrypha (2) 7.9
Ngày phát sóng: 1996-02-16
Thời lượng: 44 min
Tổng quan: Mulder pursues Krycek (unaware of the alien that has taken over his body) to get back the DAT tape containing the MJ documents. Meanwhile, the shooting of A.D. Skinner uncovers evidence that could lead Scully to her sister's murderer.
Pusher 7.9
Ngày phát sóng: 1996-02-23
Thời lượng: 44 min
Tổng quan: Mulder and Scully are asked to help in a case involving Robert Patrick Modell, a murderer possessing the psychic ability to force his will onto people. Due to a brain tumor that is slowly killing him, he is searching for a "worthy adversary" and forces Mulder into a battle of mind over matter.
Teso Dos Bichos 6.0
Ngày phát sóng: 1996-03-08
Thời lượng: 44 min
Tổng quan: 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.
Hell Money 6.5
Ngày phát sóng: 1996-03-29
Thời lượng: 45 min
Tổng quan: Mulder, Scully and a local Chinese American cop investigate deaths of several Chinese men found to be missing vital internal organs. The clues lead them to a deadly secret lottery run by the Triads in San Francisco's Chinatown district. The game is free to play but losing will cost you more than an arm and a leg.
Jose Chung's "From Outer Space" 7.9
Ngày phát sóng: 1996-04-12
Thời lượng: 45 min
Tổng quan: A alien abduction of two teenagers with endless versions of the same story prompts a science-fiction novelist to to write a book about the incident; however, nobody involved with the investigation can tell him the full story with any accuracy.
Avatar 7.1
Ngày phát sóng: 1996-04-26
Thời lượng: 45 min
Tổng quan: During a one-night-stand in the midst of his divorce, A.D. Skinner becomes a murder suspect, and Mulder and Scully return the many favors that he has done for them by analyzing evidence that someone doesn't want uncovered to prove his innocence.
Quagmire 7.4
Ngày phát sóng: 1996-05-03
Thời lượng: 43 min
Tổng quan: Mulder and Scully investigate a series of disappearances and attacks around a lake where Mulder believes that the local legend about a lake monster may be all too real. Frustrated Scully insightfully confronts Mulder about the futility of their work on the X-Files.
Wetwired 7.9
Ngày phát sóng: 1996-05-10
Thời lượng: 44 min
Tổng quan: Mulder and Scully investigate a series of murders linked to a mysterious device that alters television signals causing paranoid hallucinations. One of them falls victim to it.
Talitha Cumi (1) 8.1
Ngày phát sóng: 1996-05-17
Thời lượng: 45 min
Tổng quan: After his mother suffers a stroke under strange circumstances, Mulder searches for a strange, benevolent alien man that possesses miraculous healing powers. With the help from Mr. X, he learns about the involvement of the Cigarette-Smoking Man and uncovers some secrets kept by his parents.
