The series' third season opens with a report on sightings of a bright orange fireball that crashed in Pennsylvania and was reportedly removed under military supervision; a woman's first meeting with her biological father; an arsonist's home movies.

""Mysteries of Alien Beings"" reports on four men who say they were abducted by aliens while on a fishing trip in Maine, and includes research by psychiatrist John Mack. Also: a physicist's claim that he worked on a captured extraterrestrial spacecraft at a top-secret U.S. Air Force testing center. (Repeat)

Segments: the murder of a North Carolina woman who was shot in her car while returning home from a holiday party; fortunetelling scam artists working in the Midwest. (Repeat)

A report on the capture and arrest of an alleged swindler. Also: repeat stories on the search for a missing Nebraska mother; the dragnet for the killers of a Philidelphia child.

Reports on the disappearance of a young Ohio woman more than eight years ago; the search for a Florida woman wanted for questioning in a 2 million theft from her ailing husband; the manhunt for an alleged armed robber and killer on the FBI's Most Wanted list.

A 45-year-old kidnapping case examines a Chicago man's search for his brother, who was abducted from their parents' home. Also: a profile of a Missouri man who preyed on women's hearts and pocketbooks.

Reports on the murders of two Washington teens; nocturnal sightings in the skies above Texas; the vanishing of a Pennsylvania security guard and a fortune in platinum. (Repeat)

Segments on the reunion of lost members of an Oklahoma family; the search for an Arizona couple who posed as doctors reportedly to defraud unsuspecting patients. (Repeat)

Segments on a ""Southern belle"" who, according to this report, bilked investors out of millions in a pyramid scheme; a Colorado Vietnam veteran's search for a fellow soldier.

From November: Reports on the shooting of a former San Diego cop, who resigned from the force after testifying against fellow cops; the capture of a scam artist who preyed upon a Florida nudist camp. (Repeat)

Beginning a fourth season: U.S. military officers discuss a 1980 sighting of an unidentified flying craft near a U.S. air base in England. Also: the murders of two Texas teens reportedly involved with a cult; a Nashville, Tenn., woman's discovery about her parentage.

Reports on suspicions surrounding the disappearance of an Oregon police officer's son; an Indiana man's search for a friend and father figure of 20 years ago; the hunt for a man who reportedly murdered his estranged wife and her co-worker in front of witnesses; the recovery of a Maryland amnesia victim.

Reports: a con game using state lottery tickets that took in millions of dollars in New York state alone; the search for a homeless person who may stand to inherit $100,000; a former runaway's search for three of her nine estranged siblings.

Repeat reports on the grisly murder of a Virginia woman; an amnesiac found unconscious in the Las Vegas desert; the controversy surrounding the Shroud of Turin; and the search for the husband of a murdered Rochester, N.Y., woman.

New reports on a rash of Northern California pizza-restaurant robberies; the reunion of a millionaire and his daughter; and a fugitive's arrest in Colorado for kidnapping and murder. Repeat segments include U.S. intelligence reports suggesting there were survivors of a spy plane shot down over Laos in 1973; and the search for a fugitive con artist.

Included: updates on a Michigan man recently arrested in connection with the murder of his wife; and the apprehension of a California extortion-letter writer. Also: repeat segments on the search for the killers of an Ohio teenager; and puzzling tragedies involving two priests.

Segments on the suspicious death of a Virginia woman; the search for five Hawaiian fisherman who reportedly vanished in the South Pacific; and the death threats received by a Missouri woman who cares for stray dogs.

Repeat segments on a New Jersey woman whose psychic powers are tested; and 19th century miner credited with hiding 21 million in gold and silver. Also: an update on the capture of an Iowan wanted for embezzlement.

IRS and FBI efforts to stop a medical-investment scam operated by a team of con artists; the murders of two Swedish women vacationers, discovered in 1983 by deer hunters near Santa Barbara; a 17-year-old disappearance case, stumbled upon by a rock climber.

Segments include the 1990 Telluride, Colo., murder of Eva Schoen, wife of U-Haul heir Sam Schoen; the 14-year search for a Texas fugitive; a man's quest to find the half-sister he never met; and the search for witnesses to the disappearance of a young mother.

Reports on the 1985 disappearance of a 4-year-old boy from the Lake Tahoe, Nev., area; new evidence linking a 1930s Cleveland killer to the 1940s serial killer responsible for the Black Dahlia murder.

A recap of cases solved include the release of a prisoner who was a victim of mistaken identity. Also: the disappearance of a financially troubled Massachusetts man, who's unaware he's an heir to $750,000; the discovery of a human skeleton in an old footlocker.

The death in Martinsburg, W.Va., of an investigative journalist who was probing Government corruption and conspiracies; the search for a highway rest-stop killer in Ontario, Canada; the prison release of a man who served 10 years for murders he did not commit.

A report on new evidence suggesting a Government coverup in the 1968 assassination of Rev. Martin Luther King Jr. Also: repeat segments on a New Orleans serial killer who targets prostitutes; a con man who preys on vulnerable women.

Evidence pointing to the possible innocence of a Florida inmate serving a life term for rape; a Falls Church, Va., man's efforts to piece together his identity from sketchy facts surrounding his 1935 abandonment; and the hunt in Gallup, N.M., for a kidnap victim.