An ex-con (Ed Nelson) masterminds a robbery to provide for his pregnant wife, who doesn't know she has cervical cancer.
The theft of four Cezanne forgeries coincides with a visit from Greer's colorful Greek uncle (Theodore Bikel).
An escaped prisoner (Richard Dreyfuss) terrorizes Julie, recuperating from an accident in a doctor's home; guest Brooke Bundy.
An embittered ex-employee kidnaps the teenage son of a newspaper publisher (Don Porter); guest Julie Adams.
The investigation into a hospital narcotics-ring unexpectedly uncovers a case of euthansia; guests Howard Duff, Martha Scott.
Linc poses as a high-steel construction worker to find a friend's killer; guest Fernando Lamas, Jim Backus, Carmen Zapata.
A suspected child-beater (Marlyn Mason) kidnaps her son from foster parents and disappears.
When a friend (James A. Watson Jr.) refuses to testify against murderous loan sharks, Linc realizes he is involved with them.
A mob boss (Victor Buono) orders Julie killed when he learns she infiltrated his syndicate.
On Christmas Eve a father leaves his 5-year-old daughter with Pete then disappears; guest Jed Allen.
A former child star, due to come into a great deal of money, survives two brushes with death; guests Ruth Roman, Bob Balaban.
A Eurasian girl (Victoria Racimo) seeking her father witnesses the murder of a passport forger; guest Fritz Weaver.
A club for students with genius IQs shows off by plotting bizarre robbers; guests Robert Lipton, Pamela Shoop.
Pete and Julie pose as an affluent couple to lure a con man (Clu Gulager); guest Beverlee McKinsey.
Radio commercials inform car thieves where to pick up the stolen vehicles; guest Louis Gossett Jr.
Greer's efforts to help a gangster's nephew put him under suspicion of corruption; guest Nehemiah Persoff.
A crooked lieutenant (Leif Erickson) plants evidence on an informer's body, framing Pete.
A man blames Pete for the fatal plunge of his brother, a fleeing fur thief; guests Janet Martolin, Beverly Garland.
The squad locates a former soldier (Peter Hooten), then questions his identity.
A friend (Gwenn Mitchell) of Linc's claims she has been followed ever since receiving a fur as a gift.
The squad tries to rehabilitate a scarred shoplifter (Jo Ann Harris) by arranging plastic surgery.
To be accepted by bikers, a young man (Bobby Sherman) plans a robbery of his father's company; guest John McLiam.
The squad seeks the escaped prisoner and four suitcases of heroin; guests Edward Asner, Stefanie Powers, Robert Reed.
An extradited prisoner (Bradford Dillman) escapes Greer's custody; guests Edward Asner, Cleavon Little, Richard Pryor.
Greer orders the squad to stop protecting a man (Andy Griffith) who testified in a murder trial; guest Sharon Acker.
A convict (Bobby Sherman) who went to jail to protect his girlfriend faces danger upon parole.
Pete and Linc agree to help a friend of Julie's return jewelry he stole.
Pete rejects an invitation from an old flame (Brenda Scott) and becomes the target of her jealous boyfriend (Stephen Young).
Blaming them for his son's death in Vietnam, a recluse (Karl Swenson) holds Julie, Linc and Pete captive in a cave.
Posing as social workers, the squad seeks guns stolen for a ghetto riot; guests Henry Darrow, Robert Pine.
Julie cares for the abandoned infant of bank robbers (Michael Anderson Jr., Lyn Loring).
A paroled killer (Al Freeman Jr.) seeks revenge on Pete, who he blames for a savage beating; guest Leslie Uggams.
A woman (Vikki Carr) discovers her finacee, a Vietnam War correspondent), is involved with drugs; guest Ron Soble.
Pete, suffering from a blood clot in his brain, checks out of the hospital to find a killer; guests Linda Marsh, Guy Stockwell.
A deaf man (Desi Arnaz Jr.) saves a guard from a warehouse fire, then retreats under the glare of publicity; guest Kevin Dobson.
Pete believes he was the target of a hit-and-run driver who killed a woman; guests Meg Foster, Brock Peters.
A man (David Cassidy) accused in a hit-and-run death proclaims his innocence; guests Diana Muldaur, Frank Aletter, Marion Ross.
The squad tries to protect a TV clown (Milton Berle) from a second murder attempt; guest William Michael Berle, Keenan Wynn.
Struck by muggers, amnesiac Linc fears he is a wanted criminal; guest Lee de Broux.
The squad works at a used-car lot to infiltrate a drug-smuggling ring; guests Larry Blyden, Ruta Lee.
On rest leave after having to shoot a robbery suspect, Greer begins to suffer dizzy spells and pain; guest Laraine Stephens.
An explosion at a dune-buggy rally kills an antiwar activist; guests Shelly Novack, Tony Dow.
A blackmailer (Lou Antonio) targets Julie's boyfriend (Robert Foxworth), a doctor; guest Billy Dee Williams.
Sabotage threatens a circus owner (Edward Asner); guests Anne Archer, Parley Baer.
Three hoodlums steal snakebite victim Julie's car, stranding her in the desert with a blind hitchhiker (John Rubinstein).
A reformed addict (Brooke Bundy) is the key to finding a pusher (Cameron Mitchell) who shot two police officer.
A mentally impaired boy (Lee Harcourt Montgomery) finds a discarded murder weapon; guest Susan Howard.
Fleeing robbers (Scott Marlowe, Hal England) steal a car containing lab pigeons infected with encephalitis; guest Lynne Marta.
Linc runs out of gas near a desert ghost town, where he spots a kidnap victim (Clint Howard); guest Paul Richards.
Peter poses as a safecracker to infiltrate an industrial-espionage ring; guests Rene Auberjonois, William Smith.
His son's involvement with gamblers endangers a boxer's (Sugar Ray Robinson) comeback; guests Rocky Graziano, Hilly Hicks.
Pete befriends a 15-year-old farmboy (Billy Bowles) searching for his widower father; guest Virginia Gregg.
Julie impersonates a dead undercover agent to bust a drug ring; guests Michael Ansara, Ray Walston.
A drug dealer insists he was framed by an overzealous detective (Nehemiah Persoff).
A minister helps the squad seek the killer of his brother, a psychologist who ran a clinic for troubled teens.
An innocent family is driving a stolen car rigged to explode at 65 m.p.h; guest Greg Mullavey.
A middle-aged man (Carl Betz) trying to recapture his youth is accused of murder; guest Annette O'Toole.
Greer's golfing buddy (Jack Cassidy) heads a ring that hires itself out for harassment; guests Barbara Rush, Danny Thomas.
Student activists capture a building, taking Julie and an elderly teacher hostage; guest Bob Balaban.
The investigation into an immigration agent's death uncovers an alien-smuggling ring; guest Fernando Lamas.
A father and son, carriers of a disease, kidnap Julie when she offers them a ride; guest Brooke Bundy.
A mentally impaired teenager (Barry Brown) is accused of shooting his father; guests Don Porter, Marj Dusay.
At a beachfront cottage, Julie meets a movie idol (Vincent Price) who supposedly died 20 years before.
Linc suspects foul play when a soldier friend fails to return from Vietnam; guests Ben Murphy, Bo Hopkins.
A sadistic sheriff is determined to convict a young Indian (Cal Bellini) of murder; guest Bo Svenson.
A woman involved with liquor hijackers refuses to give her son up for adoption.
The squad ties a murder to a drug dealer (Michael Baseleon) posing as a police officer; guest Steve Ihnat.
An arrogant movie actor (Sammy Davis Jr.), Linc's boyhood friend, is the target of threats.
A political candidate attacks the sex-education views of his daughter's teacher (Jo Van Fleet).
Linc feigns insanity to investigate the death of a mental-institution administrator (Richard Kiley); guest Meg Foster.
Pete takes up sky-diving to help a troubled girl (Lane Bradbury); guest Paul Carr.
Pete falls for a woman (Anjanette Comer) he injured while chasing a burglar, then learns she is the suspect's sister.
Accidents and delays plague a movie about a 20-year-old unsolved murder; guests Frank Converse, Edward Asner, Jamie Farr.
Pete's former girlfriend (Margot Kidder) asks his help to learn what is wrong with her father; guest Anita Louise.
The squad learns a blind girl's (Gloria Foster) fiance (Ivan Dixon) is not who he claims to be.
Pete plans to quite the squad, not knowing an ex-convict (Gary Vinson) is plotting revenge.
A nun (Lynn Loring) witnesses a mob murder, but cannot remember what she saw.
Pete's old school chum (Richard Dreyfuss) says he will kill his girlfriend, then she is found dead; guest Lee Grant.
A former drug addict (Sammy Davis Jr.) refuses to fight a girl's false accusation of assault.
Julie's new love (Nico Minardos), a Middle Eastern prince posing as an exchange student, is in danger after a coup in his country.
A motorcycle gang in Mexico demands Pete and Linc discover who killed one of its members; guest Gregory Sierra.
A police chief's daughter (Renne Jarrett) falls for a singing idol (Noel Harrison) and gets involved in drugs.
An embittered handyman kidnaps Julie, mistaking her for the daughter of the woman who fired him.
An escaped mental patient (Nehemiah Persoff) is suspected of killing a former employer, who stole one of his inventions.
To bust a clever con man (Maurice Evans), the squad must join in some of his capers.
Tenants of run-down apartment buildings take revenge on the rent collector (Marvin Kaplan); guest Noam Pitlik.
Two deaths are connected to a faith-healer (Paul Richards); guest Dwayne Hickman.
The trio goes under cover on a college campus to investigate a student's death.
Julie poses as a tavern singer to investigate a has-been country performer's death; guest Tyne Daly.
Pete plans to reform an illiterate thief (Joe Don Baker) injured in a warehouse robbery.
Dissident students suspect police involvement in the death of a black student; guests Simon Oakland, Ta-Tanisha.
The squad is unaware the writer (Carolyn Jones) it is assigned to protect has a split personality.
Linc's new love (Janet MacLachlan) is evasive about her background.
Pete tries to help a young woman (Brenda Scott) and winds up the chief suspect in a murder; guest Richard Anderson.
A narcotics gang kidnaps Greer's girlfriend (Nancy Gates), the widow of an FBI agent.
A Mexican boy (Fabian Gregory) attaches himself to the squad, but refuses to answer any questions.
A clairvoyant's prediction about a college student (Veronica Cartwright) leads to an illegal-abortion ring.
The trio splits up onto three tour buses to find the killer of a man found at a bus station.
A draft protestor (Christopher Connelly), the son of a Vietnam general (Ross Elliot), faces danger in prison.
Greer thinks a series of hospital drug-robberies are inside jobs; guests Edward Andrews, Army Archerd.
A murderer stalks the suspended priest (Sammy Davis Jr.) who heard his confession; guest Robert Duvall.
Julie poses as an unwed mother-to-be to bust a baby-adoption extortion racket; guest Ida Lupino.
Pete falls for a girl (Lesley Ann Warren) who believes her jailed father (Tom Bosley) innocent of a robbery.
To flush out the murderers of a night watchman, Linc and Pete pose as peddlers of stolen guns; guest J.D. Cannon.
Vacationing Greer vanishes in a small town guarding a deadly secret; guest Jason Evers, Louis Gosset Jr.
An unknown assailant makes repeated attempts on a blind girl's (Gloria Foster) life; guest Beverlee McKinsey.
The squad must protect a TV cowboy (Monte Markham) from a series of bizarre attacks; guest Ed Begley.
Julie poses as a nurse to extract information from a wounded robber who witnessed a police officer's murder.
Mob assassins force a plane to crash, stranding Greer, Pete, Linc and a government witness in the wilderness.
Julie's mother (Nan Martin), a former prostitute, visits with a fiance (William Windom).
Linc is convinced that the death of his friend, a stunt-driver, was not accidental.
Posing as hippies, the squad looks into the bombing of an underground newspaper; guest Dabney Coleman.
Julie poses as an aspiring actress to catch a killer who already claimed three victims; guest Joan Van Ark.
Pete's favorite cousin turns to crime in a desperate attempt to win the concern of her wealthy parents.
An ex-convict tells Greer that drug pushers will be meeting at a rural trailer camp; guests James Gregory, Dub Taylor.
The squad searches for the terrorist behind repeated attempts on Greer's life.
Unaware she has contagious meningitis, a singer (Yvonne Craig) who witnessed a mob murder flees the hospital.
After an LSD trip, a photographer wakes beside the body of one of his models; guest Robert Lansing.
A school friend (Linda Marsh) of Pete's attempts suicide after seeing photos of her mother (Julie Adams) with a gigolo (Mark Goddard).
Linc's friend (Louis Gossett Jr.), a Vietnam veteran, awakens on the beach beside the body of his Army nemesis.
After a successful undercover stint in prison, Pete and Linc are approached by an opportunistic ex-convict.
A high school teacher dies mysteriously, then his star pupil disappears; guest J. J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J Pat O'Malley.
The trio investigates the death of a police detective, and uncovers a blackmail plot involving one of Pete's friends.