Mod Squad - Season 4 (1971)

After Julie picks up a blind hitchhiker, they have a flat tire and flag down a passing car for help. Unfortunately, the people in the car trick them into switching cars and abandon them in the desert.

A circus owner asks the trio for help in finding out who's committed sabotage and murder in the big top.

Julie is drawn into a bittersweet romance and blackmail.

Julie, Linc and Pete attend a dune buggy race where a pickup truck blows up, killing a young man Julie had just met. The trio then investigate the incident, suspecting foul play.

After Captain Greer shoots and kills a young man in self defense during a bust, he suffers from feelings of guilt and remorse. Julie suggests he take a vacation at a secluded resort to sort things out.

The trio helps a used-car salesman who's made a deal with the devil.

On his way to the liquor store, Linc is mugged and hit over the head. When he comes to, he wanders around in a daze, unable to remember who he is or what he was doing.

The trio must protect a TV clown from an assassination attempt.

Someone is out to kill an unfortunate young man.

The trio investigates after an innocent bystander is killed by a speeding car after it narrowly misses Pete.

The Trio help a young deaf-mute save a guard from a warehouse fire. Linc then gets involved with helping the young-deaf mute who is targeted for assassination.

Pete is targeted by the very gunman he's tracking down.

Pete is contacted by his old friend Rusty Bryson, a war correspondent whom he knew and idolized as a boy. But the Treasury department is looking for Bryson, who it suspects of smuggling drugs from Vietnam.

The trio and Greer know that a paroled killer plans to get revenge on Pete, but Pete has no idea why the man is out to get him.

Julie grows attached to a baby that's been abandoned by a couple on a robbery and murder spree.

A Vietnam veteran returns to the police force with questionable ideas of dealing with dissident ghetto residents.

Julie, Link and Pete break down in the desert during a sandstorm and seek shelter in an abandoned mine. An old man embittered by the death of his son in the war who hates hippies then sets off dynamite and traps the trio inside.

When Pete runs into an old girlfriend, she invites him to her birthday party but he turns her down, only to be kidnapped by her two friends and forced to attend the party.

Pete and Linc come close to breaking the law as they attempt to help a parolee, an old friend of Julie's, return stolen jewelry.

A stable boy's employer frames him for possessing drugs and continues conspiring against him after his parole, all in order to stop the young man's romance with his daughter.

A man happens to witness the murder of a sales clerk and agrees to testify at the trial. As a result he and his family are relentlessly terrorized by someone, even after the trial has ended.