Connor Doyle, the team's case manager in the first season comes back from the dead, but this time his intentions are not all good.

Case File #67102: ""Possession"" A software designer tells of demons attacking Case File #10103: ""Man Out of Time"" A disoriented man tells of being from the 17th century.

Case File # unknown Donner and Stone are caught in a sinister plot when they investigate a rave club overrun by zombies.

Case File # unknown An old man following three Old West outlaws is actually Axon 30 years in the future, warning his younger self against inventing time-travel.

Case File #28120: ""The Underneath"" A deadly creature lives in the sewers Case File #52113: ""Phantom Limb"" Strange events follow an accident that claimed a farmer's arm.

Case File #623119: ""UFO Duplication"" Extraterrestrials clone farm inhabitants Case File #847117: ""Clara's Friend"" An apparition communicates with a girl.

Case File #702134: ""The Hunter"" A werewolf is suspected in cattle mutilations Case File #969121: ""The Healer"" Teen is credited with healing powers.

Case File #321147: ""Perestroika"" The Office of Scientific Investigation and Research's Director of Operations Frank Elsinger orders Case Manager Doyle to lead a team of investigators to Archangelsk in Northern Russia. Having just viewed video footage of a team of Russian scientists examining a creature found frozen in a glacier by two gas plant caretakers, Elsinger does not reveal to Doyle that the last scene of the video showed scientist frightened and pleading for help.

Case File #371-211 When a curator of a museum decapitated by an unknown assailant, the Office of Scientific Investigation and Research starts to investigate.

Case File #631136: ""The Curse"" Death strikes archaeologists who uncovered an Egyptian burial chamber Case File #260122: ""Angel on a Plane"" A mysterious woman safely lands a plane hit by lightning.

Case File # unknown A journalist's relationship with a Death Row inmate causes a rare haunting.

Case File #26014: ""Forbidden North"" A humanoid beast approaches a leg-trapped logger Case File #610115: ""Reincarnation"" A man undergoing past-life regression predicts the future.

Case File # 416-209 The Dean at Braddock University brings the Office of Scientific Investigation and Research in to investigate an incident involving psychokinetic power.

Case File #828-456 The Office of Scientific Investigation and Research investigates the unusual death of a large South American rodent called a capybara at the Windsor Animal Hospice.

Case File # unknown The team's investigation of a woman's precognition of her own death leads to a shocking discovery.

Case File #693142: ""Death at Sunset"" A mysterious illness claims its victims at sunset Case File #793144: ""Collision"" The soul of an accident victim possesses the driver who killed her.

Case File #721-219 When a horrific murder takes place, the Office of Scientific Investigation and Research gets a call to come to a gallery where they find a body strung from the ceiling in the back room, his clothing shredded and his eyes ground into their sockets.

Case File #104-723 When a huge beast charges out of the woods and rips man's limb, a local police calls in the Office of Scientific Investigation and Research to identify the attacker.

Case File #392-101 Tessler Industries, a video-game giant, is testing one of its new virtual-reality war games at the Office of Scientific Investigation and Research Central Lab. When a woman is knocked to the floor with a very real head wound, Elsinger calls for the O.S.I.R. team to investigate.

Case File #34112: ""Dream House"" Blaine and Debbie McCallister summon the Office of Scientific Investigation and Research to investigate the cause of numerous strange occurrences at the site of their new home, after their teenage daughter is hospitalized as a result of a poltergeist encounter. Case File #52111: ""UFO Encounter"" Agents from the O.S.I.R. are summoned to a small town to investigate a double alien abduction of two boys and UFO sightings witnessed by many townspeople.

Case File #99101: ""Reptilian Revenge"" After an elderly man dies, his pet snakes escape Case File #44114: ""Ghostly Voices"" A voice calls a woman home.

Case File #77110: ""Creeping Darkness"" Impenetrable darkness threatens to engulf an Argentine town Case File # unknown: ""The Power"" Stress boosts a woman's psychokinesis.

Case File #33130: ""The Infestation"" NASA scientists die searching for a meteorite Case File #87105: ""Human Apportation"" A Californian and her daughter inexplicably find themselves in Toronto.

Case File #295143: ""Second Sight"" A kidney-transplant recipient has frightening visions Case File #734138: ""Chocolate Soldier"" A cult leader has power over women.

Case File #245-208 The Office of Scientific Investigation and Research investigates several UFO reports in the industry area of Montex Bioengineering.