Unsolved Mysteries: Season 4
Season 4 Lore Primer
Key plot threads, lore context, and character stakes you need to remember before diving into this season.
- Directly follows the overarching narrative developments of Unsolved Mysteries Season 3.
- Faction dynamics and core character alliances shift under escalating external stakes.
- Crucial mysteries introduced previously reach key turning points and narrative reckonings.
- Sets up serialized story arcs that build directly toward the climactic season finale.
Episode Guide
Season 4 Progress Shield
Episode #147
Sep 18, 1991
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 repo
Episode #148
Sep 25, 1991
New theories in the death of Lincoln assassin John Wilkes Booth; the disappearance of a 65-year-old man with no past; and the search for a convicted child abuser.
Episode #149
Oct 2, 1991
Reports: an amnesiac found unconscious in the Las Vegas desert; the grisly murder of a Virginia woman; the controversy surrounding the Shroud Of Turin.
Episode #150
Oct 9, 1991
The hunt for a suspected serial killer who's been stalking women in Connecticut since 1981; the search of Florida siblings for their twin brother and sister, who were adopted as in
Episode #151
Oct 16, 1991
U.S. intelligence reports suggesting that there were survivors of a spy plane shot down over Laos in 1973; the search for a fugitive con artist who defrauded the elderly out of mil
Episode #152
Oct 23, 1991
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 wh
Episode #153
Oct 30, 1991
Segments include reports of ghostly goings-on at a New Mexico hotel, and hauntings experienced by a couple who moved to a 109 year old Florida mansion last year. Also: the search f
Episode #154
Nov 3, 1991
This special edition focuses on what producers call ""the diabolical mind."" Included: profiles of Adolf Hitler and Saddam Hussein; an interview with a convicted murderer.
Episode #155
Nov 6, 1991
Reports on a case of past-life regression; the search for a couple reportedly involved in a Christmastime fraud escapade; a 1985 murder-extortion plot in Denver; the disappearances
Episode #156
Nov 10, 1991
A repeat report on crime fighter Eliot Ness's efforts to solve the case of a 1930s Cleveland serial killer. Also: new reports on law enforecement's use of psychics to solve cases;
Episode #157
Nov 13, 1991
Included: a woman's search for the police officer who risked his job to free her from an unjust sentence; new evidence in the case of a mother jailed for the death of her son; the
Episode #158
Nov 20, 1991
UFO sightings over Belgium are discussed by reported witnesses, the police and military personnel. Also: the disappearance of a Michigan company president, charged with embezzlemen
Episode #159
Nov 27, 1991
Reports on the FBI arrest of a fugitive in Commerce City, Colo.; a possible military coverup in the 1989 death of a Marine Corps captain; the search for a Florida church arsonist;
Episode #160
Dec 4, 1991
Reports on the murderous aftermath of Durant, Okla., jail escape by two killers; the suspicious death of a man who squandered an elderly widow's money; two brothers' search for the
Episode #161
Dec 11, 1991
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 form
Episode #162
Dec 18, 1991
Segments on an abusive grandmother who reportedly kidnapped her 2-year old grandson; a convicted murderer who claims he's innocent in his wife's 1983 murder; a fugitive's capture o
Episode #163
Dec 25, 1991
U.S. military officers discuss a 1980 UFO sighting near a U.S. air base in England. Other segments include the murders of two Texas teens reportedly involved with a cult. (Repeat)
Episode #164
Jan 8, 1992
Repeat segments on new theories in the death of Lincoln assassin John Wilkes Booth; and the disappearance of a 65-year-old man with no past. Also: viewer tips leading to the arrest
Episode #165
Jan 16, 1992
Reports on the 1988 disappearance of a Washington State student who picked up a hitchhiker and was never seen again; a Georgia man's search for his brother, who he suspects is stil
Episode #166
Jan 22, 1992
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
Episode #167
Jan 29, 1992
Reports on a Tennessee man's search for a family to whom he gave refuge during the Depression; the homicide death of a North Dakota woman previously thought to have died in a car f
Episode #168
Feb 5, 1992
Reports on the disappearance of a Scottsdale, Ariz., bank-fraud investigator who had probed money laundering; a mother-daughter financial scheme; the FBI search for a mother who re
Episode #169
Feb 12, 1992
A report (postponed from last week) on a clever mother-daughter financial scheme; evidence that some claim substantiates the existence of the elusive Big Foot; the hunt for a Flori
Episode #170
Feb 19, 1992
Reports in this expanded edition include a Virginia man whose investigation of UFO sightings threatened his credibility; a Columbus, Ohio, reporter who went undercover in a search
Episode #171
Feb 26, 1992
The hunt for suspects in a slick Henderson, Nev., bank robbery; the search for a woman who murdered her aunt and uncle near Chattanooga, Tenn., and stole their savings; an Abilene,
Episode #172
Mar 4, 1992
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 murde
Episode #173
Mar 11, 1992
Segments include ghostly goings-on at a New Mexico hotel, and hauntings experienced by a couple who moved to a 109-year old Florida mansion. Also: an update on the arrest in Roanok
Episode #174
Mar 18, 1992
Reports on the search for a Houston millionaire suspected of hiring two men to have his former lover killed; the mystery of a seemingly destitute Oregon woman, who left a $100,000
Episode #175
Mar 25, 1992
""The Diabolical Mind"" includes profiles of Adolf Hitler and Saddam Hussein; an interview with a convicted killer; and an examination of two chilling murder cases. (Repeat)
Episode #176
Apr 1, 1992
A new segment reports on a mysterious malady that has claimed the lives of six members of a Northern California family. Updates include the Alabama apprehension of a fugitive who r
Episode #177
Apr 8, 1992
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
Episode #178
Apr 15, 1992
A report on a wealthy Phoenix woman who was found shot to death in her home in 1988. Also: repeat segments on law enforcement's case of psychics to solve cases, the search for a Ne
Episode #179
Apr 22, 1992
Reports on a $1 million armored-car robbery in Vallejo, Cal., that left three employees dead; and a tip from an Oregon cop leading to the arrest of a Las Vegas woman wanted for for
Episode #180
Apr 29, 1992
Reports on the 1989 assault and murder in Louisiana of a 26-year-old Milwaukee woman; the 1991 kidnapping of an Austin, Texas, woman at a car wash; an adventurer's discovery of a f
Episode #181
May 6, 1992
A report on a case of mistaken identity that claimed a Phoenix man's life includes talks with experts who think the intended target was a reporter probing a murder case. Also: the
Episode #182
May 13, 1992
Reports on a man's seven-year attempt to regain custody of his son; and the Texas arrest of a Tennessee woman who allegedly murdered her aunt and uncle. Also: repeat segments on th
Episode #183
May 17, 1992
Reports in this expanded edition include the search for the killer of an elderly Washburn, Texas, man. Also: repeat segments on a Virginia man whose investigation into UFO sighting
Episode #184
May 20, 1992
New segments on claims of a murder coverup in two boys' deaths in a blazing shack; and a woman's reunion with her surrogate family with whom she lived during the Depression. Repeat
Episode #185
May 27, 1992
A report on the capture of a fugitive after his escape from a prison ward at a Chicago hospital. Also: repeat segment on the search for a reported homeless woman who may stand to i
Episode #186
Jun 3, 1992
An update on a Tennessee man's reunion with members of a family to whom he gave refuge during the Depression. Also: repeat reports on a Georgia man's search for his brother followi
Episode #187
Jun 10, 1992
Segments on an abusive grandmother who reportedly kidnapped her 2-year-old grandson; a man's search for his missing brother, who he suspects is a POW in Vietnam; two women in Manit
Episode #188
Jun 17, 1992
Reports on the arrest of a woman charged with kidnapping her 9-year-old son; the murderous aftermath of a Durant, Okla., jail escape by two killers; the murder of a Phoenix million
Episode #189
Jun 24, 1992
A new segment reports on a man's reunion with his daughter, ending a 43-year search for his only living relative, to whom he plans to bequeath an estate worth more than $1 million.
Episode #190
Jul 1, 1992
A report on the arrest in Vermont of a Florida man wanted for a deadly hit-and-run. Repeat segments include a New York con game using state-lottery tickets; and the efforts of a Mi
Episode #191
Jul 8, 1992
This expanded edition reports on the FBI arrest of a fugitive in Commerce City, Colo.; the search for 17 tons of gold bullion buried since the 1930s atop a mesa in New Mexico; a su
Episode #192
Jul 15, 1992
Segments on the search for a Houston millionaire who reportedly hired two men to kill his former lover; a seemingly destitute Oregon woman who died and left a $100,000 estate; a se
Episode #193
Jul 22, 1992
Reports on IRS and FBI efforts to stop a medical-investment scheme; the murders of two vacationing Swedish women, discovered in 1983 by deer hunters near Santa Barbara; a woman's c
Episode #194
Aug 12, 1992
Reports on a botched armored-car heist in Vallejo, Cal., that left three guards dead; a woman's search for the baby she was forced to give up for adoption 27 years ago; a rock clim
Episode #195
Aug 19, 1992
Among the segments is an update on two hitchhikers who may have information on a suspect in an unsolved Texas murder. Also: repeat reports, including the case of mistaken identity
Episode #196
Aug 26, 1992
Updates include the reunion of a family of Ojibwa sisters from Manitoba, Canada; the 1991 prison release of a Hillsboro, Mo., woman. Also: repeat reports on the search for a truck
Episode #197
Aug 30, 1992
A viewer tip leads to the arrest of a Rollingwood, Texas, woman suspected or robbing and murdering her aunt and uncle in Tennessee. Repeat reports: an adventurer's search for the A
Episode #198
Sep 2, 1992
A new segment on an Illinois man's finding that he has an identical twin brother and possibly a half sister; and an update on a couple's reunion with the daughter they gave up for
Episode #199
Sep 4, 1992
Reports on the possible wrongful murder conviction of an Aurora, Mo., man; a woman who draws uncanny likenesses of people she's never met who have died; the mysterious poisoning de
Episode #200
Sep 9, 1992
A segment on a man wanted by San Francisco authorities for the strangling of his girlfriend and the attempted murder of her aunt; an update on a man's search for his missing sister