Season 4

1979 · 24 episodes

Leonard Nimoy hosts investigations into various mysteries.

1Tidal WavesTidal waves are responsible for an enormous loss of life and property, yet often not considered as threatening as other natural disasters. Past tidal wave effects as well as future efforts to counteract potential damage is presented.
2Carlos, the Most Wanted Man in the WorldA profile of the notorious international terrorist, Ilich Ramírez Sánchez aka Carlos.
3The Amityville HorrorAn examination of the house in Amityville, Long Island, New York that is supposedly haunted.
4UFO AustraliaAn overview of the prevalence of UFO sightings in the Southern Hemisphere with an in-depth look at an Australian pilot who described his abduction while in contact with air traffic controllers.
5Immortal SharksSharks are a source of great curiosity and concern and among the sharks the most feared is the Great White. Expert testimony and reenactments demonstrate examples of the awesome power, adaptability, and immense danger of the Great White.
6The Lost Colony of RoanokeA look at new evidence which offers an intriguing theory about where the colonists of the ill-fated Roanoke colony went.
7The Shroud of TurinThis segment examines the authenticity of the Shroud of Turin, which many believe is the actual burial cloth of Christ and that it bears His image.
8Mexican PyramidsIn Mexico and Guatemala stand great temples and pyramids built long ago by the Aztecs and Mayans, two extremely advanced civilizations. Despite their many breakthroughs much of these cultures and their practices remain shrouded in mystery.
9The Abominable SnowmanAn examination of the Yeti, the legendary ape-like creature supposedly inhabiting the Himalayan mountains.
10PompeiiPompeii: The great Roman city was a wealthy resort and mecca for fun-lovers before the eruption of Mount Vesuvius in 79 AD. Were early Christians among the Roman revelers?
11D.B. CooperFollows the incredible hijacking commited by D.B. Cooper, who parachuted out of an airplane with the ransom money and was never seen again. It offers some evidence about Cooper's possible fate.
12The Ten Commandments (aka Mount Sinai)A look at Mt. Sinai, where Moses was supposed to have received the Ten Commandments from God.
13The Dark Star (aka The Dogons)The Dogon people of west Africa possess ancient, sophisticated knowledge of the Universe, in particular of the star Sirius B, which remained unknown to scientists until 1862. How did the Dogon gain their advanced awareness of the heavens?
14The San Andreas FaultThe San Andreas Fault traverses the majority of California. Based upon historical and scientific data, is it possible to predict future earthquakes along the fault line as well as mitigate potential damage and loss of lives?
15The Missing HeirAt the time, there were over $20 billion unclaimed in USA banks from those who died intestate. This show focuses on a stock certificate in a San Francisco vault of Wells Fargo Bank worth $3.2 million.
16Vincent Van GoghAn examination of the legendary, but troubled, painter Vincent Van Gogh - was he really mentally ill?
17Wild ChildrenSeveral alleged historical cases are examined of children who became lost and were raised in the wild by animals.
18The Ghost Ship (aka Mary Celeste)An examination of the notorious sailing ship that was discovered mysteriously abandoned at sea with the crew and passengers vanished without a trace.
19Earth Visitors"In Search of ..." examines evidence that life on earth began when extraterrestrials brought it here.
20John the Baptist"In Search of..." investigates to determine whether the legendary holy man's remains are in Europe or Egypt.
21Air Disaster PredictionIn this episode, In Search Of investigates the possibility of predictions of airplane disasters. Did an ordinary citizen predict the 1979 crash of American Airlines Flight 191 in Chicago? Did another citizen foresee the 1978 collision between a Pacific Southwest Airlines 727 and a small plane? Can such predictions be used to prevent other diasters?
22The Bimini WallA look at the various theories behind the origin of the Bimini Wall as well as other natural features of the district, focusing-upon the much-discussed connection to the lost city of Atlantis.
23Glenn MillerAn examination of the mysterious disappearance of the big band leader.
24Past LivesIs it possible to determine if we've lived past lives? Several cases of suspected reincarnation are considered and the practice of regression therapy, the process of revisiting past lives to help solve current dilemmas, is demonstrated.

Episodes