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.

Segments: a murder attempt on a former Florida mayor; an Arkansas family's search for a long-lost brother; a five-plane Navy patrol's 1945 disappearance over the Bermuda Triangle; an antidrug activist's shooting.

Reports on the search for a Bakersfield, Cal., physician; the FBI hunt for a robbery gang suspected in armored-car holdups in Minnesota and Baltimore; and the disappearance of a Spokane electrician

Segments on the 1976 murder of a New Yorker who may have known too much about an organized-crime ring; a case involving the infilitration of Government computers and private phone lines.

Reports on the search for Nazi treasures buried near the Austrian-Swiss border; the disappearance of a movie producer's adult son in Beverly Hills; the search for an escaped convict; the disappearance of a boat and crew headed for Haiti.

Reports on a series of child-molestation cases; a Tennessee family's search for a missing sibling; a series of bizarre murders in a small town in New Hampshire.

Segments include the story of a South Carolina couple whose home withstood the destruction of 1989's Hurricane Hugo after their reported encounter with a ghost; the disappearance of a La Jolla, Cal., financial analyst in the El Paso desert.

New evidence in the 1937 disappearance of Amelia Earhart; the search for the murderer of a Woodstock, Ill., family; a climatologist who accurately predicted seven earthquakes in the past decade.

Repeat segments from the past three seasons include reports on Nazi war criminal Rudolf Hess; the murder of race-car driver Mickey Thompson and his wife Trudy; and supposed findings of intelligent life on Mars.

Unexplained Death: Mickey Thompson (UPDATE)

The FBI probe into the 1965 murder of a black lawman in Louisiana; an update on a series of 1988 arsons; a policeman's nine-year search for his two sons; the hunt for a ""cowboy"" bank robber in Arizona and Washington.

Segments: the fatal shooting of a Massachusetts youth; the disappearance of a 4-year-old on a picnic in Montana; the murder of a truck driver at an Oklahoma rest stop; a reunion of two childhood friends.

The possible wrongful conviction of a Missouri man with the murder of a 79-year-old woman, which later resulted in a confession from a Kansas inmate.

Reports on the search for an assailant in the shooting of a North Carolina secretary; the murder of a pizza deliveryman and the subsequent finding three years later of the gun in a pawnshop; the unclaimed fortune of a deceased British socialite.

The search for a ""casanova killer"" who wooed then murdered women; a Florida man's search for his brother, who reportedly died in Vietnam but who may still be alive.

Unanswered questions involving the death of a 28-year-old nurse found in a North Carolina pond; a woman's search for her father, reportedly involved with the CIA.

Reports: a five-plane Navy patrol's 1945 disappearance over the Bermuda Triangle; a murder attempt on a former Florida mayor; the search for suspects in the shooting of an anti-drug activist. (Repeat)

A new segment probes the reopening of a murder case following anonymous phone calls to Florida police insisting the victim is still alive. Also: repeat reports on the experiences of three sets of identical twins; a policeman's hunt for his partner's killer.

Reports on the 1989 death of a Spokane teen; the FBI probe into the murders of a Bethesda, Md., Government worker's wife, three sons and mother; the apprehension in Albuquerque of two Federal fugitives.

Reports on the search for a man whose wife and two stepdaughters were murdered in Las Vegas in October; the FBI search for a bank robber who twice escaped from prison.

A report on the FBI hunt for a coldhearted con man wanted for bilking women. Also: a repeat segment on sightings of a bright orange fireball that crashed near Kecksburg, Pa., in 1965.

Reports on the FBI search for a four-time prison escapee charged with bank fraud; the murder of a Maryland teenager; and the discovery on a South Pacific atoll of a possible artifact from Amelia Earhart's missing plane.

Reports on the connection between voodoo rituals and five deaths on St. Croix; a Hungarian man's four-year search for his sister in America; and a Texas UFO sighting. Also: viewer tips (postponed from last week) leading to the arrest of a man on kidnapping charges.

Segments: evidence said to refute historical theories on the deaths of Old West outlaws Butch Cassidy and the Sundance Kid; the death of a pediatric nurse who had been harassed and terrorized for seven years; a woman's search for her siblings.

A segment on crime fighter Eliot Ness's effort to solve the case of a 1930s Cleveland killer known as the Butcher of Kingsbury Run. Also: the 1989 murder of an Oregon prison director; a woman's 7-years search for her two sons; and viewer tips.

A report on the FBI hunt for a con man wanted for bilking women; a repeat segment on sightings of an orange fireball that crashed near Kecksburg (Pa.) in 1965 and was reportedly removed under military supervision; and an update on a reunion.

Reports on the 1976 murder of a New Yorker who may have known too much about an organized-crime ring; the search for a fugitive computer hacker; the reunion of two childhood friends. (Repeat)

From 1988: Segments examine the claim that the Queen Mary luxury liner is haunted by a sailor's ghost; rumors of a haunted 18th-century Merion (Pa.) inn; and apparitions that torment a Georgia couple. (Repeat)

The search for Nazi treasures buried near the Austrian-Swiss border; the disappearance of a Beverly Hills man; the FBI search for a maximum-security-jail escapee. (Repeat)

The controversy over the identity of a Los Angeles woman whose body was reportedly found inside her apartment, and the anguish of her family who don't believe it's their daughter. Also: Edgar Cayce 40-year history of diagnosing illnesses; a Michigan town's outrage over the murder of a high-school counselor.

A new segment reports on a Los Angeles man's search for his kidnapped son. Repeat segments include the search for a California doctor wanted in connection with the rape of two women.

Reports on the rampage of a pharmacy student, triggered by academic frustrations; the 1958 disappearance of a U.S. Army officer who had participated in atomic testing in Nevada; and a family's search for a brother, adopted in 1939. Also: viewer tips.

A report on the arrest of a suspected serial child molester, profiled in October. Also: repeat segments on a Tennessee family's search for a missing sibling; a series of bizarre New Hampshire murders; the disappearance of a man who authorities believe is alive.

The FBI probe into the 1965 murder of a black Louisiana sheriff; an update on a series of 1988 arsons; a policeman's nine-year search for his two sons; the hunt for a ""cowboy"" bank robber, suspected of crimes in Arizona and Washington. (Repeat)

Reports on the search for a suspect in the 1982 death of a Virginia woman; an El Paso woman's search for her GI father, whom she never met; and an underground tunnel reportedly used to transport cocaine.

Reports on a convicted con artist; the search by Sacramento sheriffs for a gunman who killed six at convenience stores; a 1982 double homicide in Colorado.

This compilation of high-profile murder and mystery cases is culled from previous episodes.

A report on the Missouri murder of a 6-month-old whose mother says he died of a rare genetic disorder. Also: repeat segments on the search for a trio of armored-car robbers; and the 1937 disappearance of Amelia Earhart.

A new segment profiles a fugitive cult leader wanted by the FBI on charges of child abuse and of kidnap and murder threats against a Federal judge. Repeat segments: the disappearance of a La Jolla, Cal., financial analyst; the search for an Illinois man following the 1988 murder of his girlfriend's parents.

A new segment examines the case of a paroled murderer, who was convicted in the death of his first wife, and who is wanted now in connection with the death of his second wife. Repeat segments include the fatal shooting of a Massachusetts youth.

The possible conviction of a Missouri man in connection with an elderly woman's murder, which later resulted in a confession from another inmate. (Repeat)

Reports on the murder of a pizza deliveryman and the finding of the gun in a pawnshop three years later; a treasure hunter's search for gold, diamonds and silver reportedly buried in Arizona in 1881; the unclaimed fortune of a deceased British socialite. (Repeat)

Unanswered questions involving the 1985 death of a nurse found in a North Carolina pond; a woman's search for her father, a pilot reportedly involved with the CIA; the search for a Wisconsin grandmother, missing since 1910. (Repeat)

Reports on the FBI search for a Bethesda, Md., Government worker, whose wife, three sons and mother were murdered in 1976; the 1987 disappearance of a 4-year-old Union, Tenn., girl. (Repeat)

Repeat segments on the FBI search for a convicted murderer; and a man's search for his family, children of Hungarian immigrants. Also: the arrest of two juveniles.

Reports on the FBI search for a four-time prison escapee; suspects in a Maryland teenager's murder; the search for a Wisconsin grandmother, missing since 1910. (Repeat)

Segments: new theories on the deaths of Old West outlaws Butch Cassidy and the Sundance Kid; the death of a nurse who had been terrorized for seven years; a Wyoming woman's search for her siblings; a 25-year-old missing-persons case. (Repeat)

Reports on crime fighter Eliot Ness's effort to solve the case of a 1930s Cleveland serial killer; the 1989 murder of an Oregon prison director; the possible murder of an exotic dancer in Hollywood. (Repeat)

The reported hit-and-run death of a Spokane teen whose parents believe he was murdered; Edgar Cayce's history of diagnosing and treating illnesses; a Houston woman's six-year search for her two sons. (Repeat)

A new segment details the arrest of a cold-hearted con man. Also: repeat reports on the aftermath of a Missouri pharmacy student's violent rampage; the 1958 disappearance of an Army officer who had participated in atomic tests; and a family's search for a brother.

Reports on a Colorado double homicide; a 4-year-old Montana girl's disappearance during a family picnic; a haunted Victorian-era home in Carson City (Nev.). (Repeat)

A report on the 1990 murder of a Michigan high-school counselor, and the subsequent shoot-out between the police and the suspect. Also: repeat segments on two L.A. disc jockeys suspected of staging a phony murder confession to boost their ratings; the Missouri arrest of a fugitive wanted for fraud.

A report on a 41-year-old California man's search for both his father and his son; repeat segments on a New York City coin scheme.

New segments: the search for a former Miami bank employee wanted for embezzling $500,000; the hunt for a con man who bilked lonely, middle-aged women; the arrest of a fugitive cult leader.

From last season: Reports on an Ohio woman who claims she's the reincarnated spirit of a 19th-century woman; the unexplained death of a 21-year-old rookie cop from Mountainaire, N.M. (Repeat)

New reports on a Las Vegas woman's confession to felony kidnapping; new evidence in the case of a convicted Missouri woman; the arrest of a Federal fugitive on theft and computer-hacking charges.