Is It Real?

1. S01E01Spontaneous Human CombustionJanuary 21, 2006—Apparent spontaneous combustion of a human body.
2. S01E02UFOsJanuary 28, 2006—Analyzing claims and dissecting the evidence with astronomers, psychologists and fungus expert.
3. S01E03GhostsFebruary 4, 2006—Scientists examine evidence of ghostly visitations.
4. S01E04BigfootFebruary 11, 2006—Scientists examine evidence behind the rumors of giant primates, such as sasquatch and yeti.
5. S01E05Lake Monsters (Monsters Of The Deep)August 1, 2005—People debate the existence of gigantic creatures in deep bodies of water.
6. S01E06Animal Oracles (Psychic Animals)August 14, 2005—Animals appear to have an innate ability to recognize the early signs of natural disasters.
7. S01E07Superhuman Powers (X-Men)August 20, 2005—Probing reports of people with superpowers.
8. S01E08ExorcismMarch 11, 2006—The world of present-day exorcisms.
9. S01E09Crop CirclesMarch 18, 2006—People debate the origins of crop circles.

Season 1 ranked & reviewed

1. S02E01Police PsychicsSeptember 26, 2006—People examine whether psychics are able to help police investigations.
2. S02E02ChupacabraOctober 2, 2006—Examining evidence for the existence of the bloodsucking chupacabra.
3. S02E03Extreme SleepwalkingOctober 9, 2006—Researchers test whether people can commit complex crimes while they are sleepwalking.
4. S02E04StigmataOctober 23, 2006—Some people show marks resembling the crucifixion wounds of Jesus Christ.
5. S02E05Ape-ManOctober 30, 2006—Investigating the debate over the existence of Orang Pendek, the "little man" of Sumatra.
6. S02E06The Nostradamus EffectNovember 13, 2006—Nostradamus made predictions about the future, some of which appear to have happened.
7. S02E07Da Vinci's CodeNovember 20, 2006—Dan Brown's novel "The Da Vinci Code" presents mixed fact and fiction as fact.
8. S02E08Last Living CavemanNovember 27, 2006—A Russian hominologist that claims to have skulls and hair samples of a relic Neanderthal.
9. S02E09VampiresDecember 4, 2006—Separating fact from fiction when it comes to vampire myths.
10. S02E10Bermuda TriangleDecember 11, 2006—Numerous ships and planes vanish in the Bermuda Triangle.

Season 2 ranked & reviewed

1. S03E01AtlantisJuly 23, 2007—Searching the world for the mythical lost civilization of Atlantis.
2. S03E02Miracle CuresAugust 14, 2007—Examining divinely-inspired miracle cures for which science doesn't have a straight answer.
3. S03E03Jack the RipperAugust 20, 2007—The search for clues for the identity of Jack the Ripper.
4. S03E04HauntingsAugust 21, 2007—Investigating the supernatural realm of ghosts, poltergeists and demonic possession.
5. S03E05Russian BigfootAugust 27, 2007—Evidence of a stone-age man still living in the remote mountains of Russia.
6. S03E06Ancient AstronautsAugust 28, 2007—The evidence for and against the belief that Earth was visited by aliens thousands of years ago.
7. S03E07Life on MarsSeptember 3, 2007—Analyzing scientific data and amateur research in search of proof of whether there is life on Mars.
8. S03E08Feral ChildrenSeptember 4, 2007—A team of experts tries to separate fact from fiction during an investigation into feral children.
9. S03E09King ArthurSeptember 10, 2007—The legend of King Arthur.

Season 3 ranked & reviewed

1. S04E01Ghost ShipsOctober 15, 2007—Investigating maritime mysteries and haunting tales of ghost ships.
2. S04E02Shroud of TurinOctober 22, 2007—The forensic and scientific evidence found on the Shroud of Turin.

Season 4 ranked & reviewed