Case File # unknown Mysterious sky-falls may be the result of the Super Sargasso Sea theory.

Case File #309-217 When a city worker is killed by a wave of light and sound, the Office of Scientific Investigation and Research is called in to investigate.

Case File #721-219 The Office of Scientific Investigation and Research investigates a suburban home in which the living room has become an icy chamber.

Case File # unknown Peter's old friend lures him into the wilderness seeking retribution for past deeds.

Case File # unknown During an investigation, Donner, Stone and Davison are trapped in an elevator.

Case File # unknown Mia Stone experiences precognitive dreams and hallucinations during an investigation.

Case File #47129: ""Free Fall"" A sky diver tells of defying gravity Case File #92109: ""The Presence"" A child fears a destructive force.

Case File #009-873 Two computer programmers trying to develop a solution to the Y2K problem enter a sealed lab and begin work. Later, they go into convulsions and, with blood pouring from their eyes and ears, fall to the ground dead. The Office of Scientific Investigation and Research team arrives at the lab to investigate.

Case File # unknown A spiritual entity is blamed for an outbreak of murders at a Hollywood retreat.

Case File #500-208 A senior data analyst of the Office of Scientific Investigation and Research dies of an apparent heart attack at a Cuban-style neighborhood party. The rabbi who's conducting the funeral suddenly hears scratching sounds coming from coffin, opens the lid and finds out the man is alive.

Case File # unknown Matt inadvertently enters an alternate dimension as a contestant on a game show where he must re-examine his life.

Case File #443-987 Alone on Valentine's Day, Lindsay Donner visits a neighborhood after-hours club, where she catches the attention of the bartender. Despite the attraction Donner leaves and is called back to the vicinity the following morning when a body is found in the alley.

Case File # unknown A ghost-like image in a photograph might be the link between a serial killer and a real-life angel.

Case File # unknown An angry spirit torments a group of artists in an old church.

Case File #898750 As the third season begins, physicist Peter Axon is the only remaining member of the Office of Scientific Investigation and Research team. Dr. Anton Hendricks is apparently dead, having disappeared into a mysterious apportation device known as the Arch, case manager Matt Praeger has tendered his resignation after differences with the O.S.I.R.'s Director of Operations Frank Elsinger and senior data analyst Lindsay Donner has left the team after running afoul of Praeger and revealing confidential information. Axon and Curtis Rollins, the case manager assigned to the Arch case, take their investigation to a remote area of northern Quebec after an RCMP officer finds a woman wandering alone in the sub-tundra. It turns out the woman had vanished into the Arch and then re-appeared 2,000 miles away. Lindsay Donner and Matt Praeger rejoin the team to recover Hendricks from the Arch.

Case File #790-002 Matt Praeger's daughter, Dana, is sleeping over at the country home of her friend, Vanessa, when the girls hear a strange noise coming from the bedroom of Vanessa's adopted brother. The Office of Scientific Investigation and Research team arrives at the house to conduct an ""unofficial"" investigation.

Case File #298-321 Psychic healer has just successfully restored the sight of a blind woman when he is interrupted by the Office of Scientific Investigation and Research agents and taken to the central lab to test the man's healing powers.

Case File #417-205 Deep in the interior of a national park, a strange epidemic strikes a Native American reserve, turning the residents into living statues.

Case File #64131: ""The Transient"" A dybbuk invades the souls of innocents Case File #86126: ""Two Lost Old Men"" Young people pass through a forest's barren zone and instantly age 50 years.

Case File #938-216 A dealer of rare animals breaks into an abandoned factory with an accomplice, who afterwards is pulled back into the complex by some unseen presence.

Case File #965-789 Dr. Anton Hendricks' wife has recently returned from a mysterious apportation device called the Arch, into which she vanished 12 years ago. Hendricks has become increasingly suspicious that she is not the Catherine he knew.

Case File # unknown Struck by lightning, a woman must release the electricity through sex in order to survive.

Case File # unknown The O.S.I.R. investigates satanic cult activity on a college campus.

Case File # unknown Lindsay and Peter are under cover as a married couple to investigate aberrant behavior among community residents.

Case File #206132: ""The Light"" As wounded Rollins lies near death, his evil doppelganger stalks the Office of Scientific Investigation and Research.