A private investigator (Kenneth Mars) believes Betty is killing her cousins to get an inheritance.
A writer dies under strange circumstances just after a supposed meeting with Barnaby.
Betty hurries to meet a troubled friend, but arrives minutes after the woman has been slain.
A murder victim is labeled a prostitute by newspapers, leading her father to seek vindication.
A comedian (Ed Begley Jr.) is a prime suspect in the murder of the nightclub owner who fired him.
Betty's shipboard romance ends when her lover vanishes, leaving behind a dead man in his room.
Con artists target a singer (Bonnie Ebsen) and her manager.
An intruder blinds a fashion photographer with acid and steals some of her negatives.
A private investigator's greed during his search for a girl has near-fatal consequences.
J.R.'s friend (Lawrence Hilton-Jacobs) flees a murder scene because he fears police will accuse him.
Betty disputes a police report that says her friend died from a heart attack.
As a warning, racketeers kill a vigilante-group leader's son.
To bust a narcotics ring, J.R. takes the place of a murdered friend in a rehab center.
A rape victim's husband asks Betty to convince the withdrawn woman to identify a suspect.
Barnaby is certain he saw a thief, believed dead, at his daughter's Olympic tryout.
The hunt for a missing girl leads Barnaby to an international white-slavery ring.
J.R. reluctantly agrees to find his old Chicago girlfriend's runaway sister, who is in Los Angeles.
Barnaby's niece is the prime suspect in the shooting of the attorney handling her dead husband's estate.
A woman goes after Betty, whose testimony can place a fight manager at the scene of a boxing czar's death.
J.R. must escape from prison after nearly dying at the hands of an assassin.
Barnaby's compassion for a friend blinds him to the man's involvement in an arson scheme.
Police accuse J.R. of interference when he wants to talk to a woman who saw a witness murdered.
A fortune hunter (Greg Evigan) kills a gold prospector then frames the fiance of the man's granddaughter.
Barnaby's probe of a friend's murder locates a missing girl involved with a self-styled messiah (Pat Hingle).
Barnaby vows to continue the investigation after death threats against a friend culminate in murder.
An airline passenger hides a key in a fellow passenger's shoe, making her the target of a gang.
A bigamist works fast to eliminate his second wife when his first wife's disappearance raises suspicion.
A married man asks Betty to investigate a young woman's death.
Barnaby must deal with a modern security firm's equipment when he provides protection for a rich businessman.
A young woman lends her bed to a visiting friend for the night, only to have her guest murdered.
Betty takes an insurance-company assignment to investigate the death of a patient at a private sanitarium.
Barnaby uncovers a wartime gold heist and is charged with manslaughter while seeking a supposed deserter.
An Army wife asks Barnaby to find her husband, a captain who supposedly deserted in Vietnam.
A priest searching for his missing sister suggests Barnaby ask a psychic for help.
The latest of several accidents at a private school nearly results in a death.
Barnaby probes the death of a film editor in a car accident supposedly caused by the man's heart attack.
Betty, trapped in her car, sees the killer who forced her off the road retrieve a letter from the corpse of his victim.
J.R.'s childhood sweetheart is threatened by her mentally unstable ex-husband, also J.R.'s friend.
Betty joins a theater group to investigate threats to a leading lady's sanity.
J.R. passes out while going home from a date and is later charged with rape.
A wealthy industrialist's son is kidnapped while with his girlfriend on his father's estate.
A man's partner disappears while trying to buy land near a resort area.
A murder suspect says she is innocent and that Barnaby is her father.
While vacationing, Betty acts as bait for a rapist stalking a seaside resort; guest Larry Linville.
A fashion buyer's fatal fall points to an aggressive clothing manufacturer and a model.
Barnaby is shot and blinded while in a remote forest to rescue a girl abducted by two armed men.
To fool authorities, a hijacker's lover (Bonnie Ebsen) claims a whirlpool sunk her boyfriend's boat.
Barnaby and J.R. help a desperate girl hounded by a persistent, rejected suitor.
Betty unwittingly agrees to find a psychotic killer on the run from police.
Barnaby reopens the kidnapping investigation; guests Marj Dusay, Bradford Dillman.
J.R. falls for a female theft suspect, jeopardizing his assignment to trap her.
A jewelry-store owner steals diamonds as ransom for his wife.
A murder suspect rejoices when a noted lawyer offers to defend him, unaware the man's son is the killer.
An old college friend disappears while lunching with Betty, leaving behind his 9-year-old son.
When a journalist drowns just before a story breaks, clues lead Barnaby to the man's married lover and her aging spouse.
Barnaby suspects supernatural forces after a 12-year-old accurately predicts deaths and a disappearance.
Betty searches for a physician (Edward Winter) who helped after an accident.
A widow (Vera Miles) relives her past after meeting her niece's beau, an exact double for her husband.
Barnaby's search for a runaway housewife leads to a town controlled by thieves.
Barnaby and J.R.'s probe of a burglary/murder case leads to prostitution and robbery.
J.R. must solve a street-gang member's murder or be killed for knowing too much.
The sister (Lee Purcell) of a hit-and-run victim seeks her brother-in-law, who vanished after the accident.
A blackmail victim (Susan Howard) resorts to theft and murder to keep the secret from her spouse.
The abusive husband of Betty's friend (Diane Baker) seeks counseling then becomes a murder suspect.
J.R. infiltrates mercenaries to find a Vietnam veteran, then learns his quarry is stalking him.
A TV newsman (Robert Reed) hires a stuntman to fake a news event that results in a priest's death.
A father learns the charter boat piloted by his missing son may have carried drugs.
The inside man in an armored-car heist becomes a hero after killing a two-timing confederate.
A mechanic who vanished the eve of his wedding was a friend of two devious sisters; guest Cassie Yates.
Barnaby thinks he has caught the killer who sent Betty a valentine, until the man calls her.
Police learn that a college teacher, a supposed suicide, was living under an assumed identity.
Claiming one of the robbers raped her, a woman refuses to report a burglary.
Barnaby tries to keep a frightened witness alive after a murder attempt; guest Tovah Feldshuh.
Barnaby and J.R. link singing sisters to murders, then discover they have assumed new identities.
A husband admits in group therapy to wanting to kill his wife, then finds her dead.
A Vietnam veteran's best friend kills, then convinces the disturbed soldier that he did it.
A middle-aged sheriff suspects his young wife's philandering is linked to ritual murders.
Barnaby connects a billionaire's death to the suicide of a businesswoman who was once the man's secretary.
Barnaby suspects a husband murdered his rich wife, the cousin of Betty's playboy beau (David Hedison).
A nun is suspected of disconnecting the life support of her dying sister, a prostitute.
A playboy (Bradford Dillman) aims to steal plans of a security system guarding $2 million in diamonds.
Barnaby's search for a 6-year-old boy uncovers the father's (Don Johnson) involvement in weapons hijacking.
Barnaby's attempts to clear a prison trustee of murder uncover clues to a long-missing $500,000.
After a mental patient drowns, Barnaby learns that the doctor and judge who committed her have been slain.
A CB-radio conversation provides a clue to finding a ranch employee who spotted a break in the fence.
A released convict (Gary Lockwood) tries to obtain a ransom by renewing an old kidnapping scheme.
Scuba divers hire Barnaby to investigate the death of a diver seeking a Spanish galleon.
The death of a pilot leads Barnaby to a money-laundering operation in the Bahamas.
A reporter (John Rubenstein) has a clue to the murder of a state official who uncovered a land-development scam.
Barnaby's cousin (Mark Shera) comes to California to solve the murder of his father, a Chicago police officer.
Barnaby poses as an eccentric adventurer to investigate murder attempts on a millionaire (Denver Pyle).
A sheriff (Clu Gulager) interferes with Barnaby's efforts to clear a mentally impaired youth of murder.
Inconsistencies in a surfer's death put Barnaby on a killer's trail; guests Joanna Miles, Jeff Conaway.
Barnaby seeks a witness (Gary Lockwood) who could clear his client of a bank employee's death.
Betty doubts a friend's (Gary Collins) innocence when evidence implicates him in murder.
Barnaby seeks a gang member who thinks he caused a wealthy man's death.
Barnaby probes the mob-style murders of an ex-gangster and an author who were collaborating on a book.
A desperate man (Barry Brown) holds Betty hostage to force Barnaby to reopen his brother's case.
A con artist must kill when a former victim appears unexpectedly.
A coach seeks to avert a scandal after an Olympic swimming hopeful dies mysteriously; guest Pat Hingle.
An art collector's death disrupts the forgery plans of his wife (Donna Mills) and her lover.
Barnaby uncovers bigamy, blackmail and murder when he seeks a missing family man; guest Stephen Collins.
A woman ingratiates herself with high-society horse lovers to set up burglaries for her beau.
After learning she was adopted, an heiress seeks her biological mother; guest Eileen Brennan.
Barnaby must determine if the dog that killed a boy's stepfather was attack-trained; guest Ina Balin.
A murder witness says she was listening to a talk-show host (Larry Hagman) just before the crime.
An insurance company sends Barnaby to investigate the death of a honeymooning hotel owner.
A father asks Barnaby to clear his daughter's reputation after she dies from a drug overdose.
Barnaby heads an independent probe of two deaths resulting from fierce competition within a firm.
A bride stuns her groom, a newspaper editor, by fleeing the reception after seeing her own photograph.
A woman suspects her photographer fiance's death is linked to a murder story; guest John Ritter.
A former mental patient (Kristoffer Tabori) is suspected in a murder similar to one he once committed.
Barnaby seeks the culprit behind a campaign of terror directed at an actress (Anne Francis).
Frank Cannon (William Conrad) and Jones find themselves in the middle of an international conspiracy which threatens their lives.
A wife (Sharon Acker) is suspect in the death of her philandering husband.
A British spy puts a double agent in danger by hiring Barnaby to find a Czech espionage expert.
Two murderers make their victim appear to be a missing embezzler.
The victim's allergy provides Barnaby a clue in the death of a man who revealed an embezzler.
A murderous actor uses his disc-jockey look-alike (Monte Markham in a dual role) as an alibi.
A former mental patient thinks she is losing her mind when she hears her dead daughter on the telephone.
A director's plan to use murder to rid himself of an over-the-hill actor backfires.
A father hires Barnaby to find his college-student son, hiding after being wounded during a robbery.
Despite evidence, Barnaby believes a man accused of killing a judge is being framed.
A wealthy manufacturer and an experienced yachtsman die in a sailing accident; guest Pamela Franklin.
A missing woman's body turns up near the home of her last companion, a pro-football player; guest Nick Nolte.
Barnaby learns a teenage runaway (Darleen Carr) has married a hired killer.
An alleged suicide exposes a TV commentator's plan to reveal an industrialist's criminal ties.
A seemingly respectable bank president (Lois Nettleton) embezzles and murders; guest Ed Flanders.
The owner's friends are Barnaby's top suspects in the theft of a $1 million diamond; guest Laurence Luckinbill.
An attempt at marital reconciliation involves a country-music singer (Julie Sommars) in a murder cover-up.
Barnaby seeks to explain a motorcycle manufacturer's death during a product test-run.
Jealousy goads the leader (Gary Lockwood) of a theft ring into killing an insurance man.
A bondswoman (Sheree North) asks Barnaby to find a bail-jumping hit-and-run defendant.
The courier's death thwarts the plans of three car-pool members to steal $300,000 from a firm.
His wife's murder threatens a publishing tycoon's (Fritz Weaver) political aspirations.
A blackmailing private detective (Patrick O'Neal) kills his victim.
A woman (Jessica Walter) becomes involved in her husband's embezzlement scheme.
A professor's auto-accident death reveals two women competing for a con man's (Robert Foxworth) affections.
The small-time gambler Barnaby seeks is related to a promising pro basketball player with a questionable past.
Barnaby seeks to foil a con man (Bradford Dillman) who impersonates wealthy men and weds rich women.
A woman impersonates a businessman's dead wife to collect a hefty divorce settlement; guest Susan Clark.
A stockbroker's widow becomes the second victim of her husband's killers (David Wayne, Eileen Heckart).
Barnaby enters a Latin American power struggle when he searches for a mysterious client's son.
Betty asks Barnaby to investigate her college roommate's death, which police list as suicide.
Barnaby pursues a rock singer (Marjoe Gortner) for a songwriter's murder.
Unaware she is the killer's alibi, a girl hires Barnaby to investigate her father's death.
A jewelry dealer (Gary Lockwood) schemes to steal $500,000 in platinum from his own company.
The trail of a killer stalking a rich girl's suitors leads to a wheelchair-bound ex-boyfriend; guests Ida Lupino, Meredith Baxter.
The stormy relationship between a feminist and a writer ends with the death of the author's wife.
Barnaby's probe of a motorcyclist's death leads to a reclusive businessman and the mob; guest Patrick O'Neal.
The investigation of an executive's death in an airplane crash yields three suspects.
Betty poses as the girlfriend of an attorney who defended a jewel thief, then killed him for his loot.
An attorney dies in a car crash after seeing his wife's ghost.
A husband thinks he killed his wife's (Lynda Day George) lover but learns the wrong man died.
A merchant seaman involved in the disappearance of a Cambodian emerald dies.
A man (Glenn Corbett) shoots the hired killer of his wife, then is blackmailed by the assassin's widow.
A private investigator's widow hires Barnaby after her husband dies while on a murder case.
A race driver (Clu Gulager) kills his brother-in-law to prevent him from revealing infidelites; guest Margot Kidder.
Barnaby probes a rancher's death and winds up trapped in a mine with rattlesnakes.
Barnaby clears a resort owner (Wayne Rogers) of murder then doubts the evidence.
Barnaby believes a jewel theft is connected to a circus performer's fatal leap from an office building.
A blind amnesiac (Belinda Montgomery) holds the only clue to a woman's disappearance.
Barnaby believes a thief-turned-author (Peter Haskell) used a TV appearance to cover a robbery.
Barnaby suspects a fading film star (Barry Sullivan) involved in drugs caused an actress's death.
Barnaby's murder case against a husband (Bill Bixby) crumbles when his wife, the victim, turns up alive.
Barnaby goes to a country town to recover money carried by a hit-and-run victim.
A man arranges to meet with Barnaby about a case then is slain before Jones arrives; guest Roddy McDowall.
Two show-business managers concoct a kidnapping plot to profit from a rock musician's accidental death; guest Andy Kim.
Barnaby suspects foul play in the disappearance of an author who fictionalized wealthy people's lives; guest Anne Francis.
Barnaby uncovers Mexican drug-dealing when a woman hires him to locate her father.
To recover incriminating files, an attorney (Eric Braeden) kills a colleague then romances the widow (Sharon Acker).
Two prep-school students try to conceal an accidental death by framing a man; guest Geraldine Brooks.
An ex-convict (Gary Lockwood) torments Barnaby and Betty with threatening letters and gifts.
Barnaby seeks a husband (William Shatner) who embezzled his wife's money then staged his own murder.
Ex-private detective Barnaby Jones comes out of retirement to find his son's killer; guests Bradford Dillman, William Conrad.