A campus demonstration may turn into a bloody conflict if a mentally disturbed student has his way. Linc: Clarence Williams III. Walter: Bob Balaban. Julie: Peggy Lipton. Miss Osgood: Josephine Hutchinson.

Linc receives a desperate call from an old friend, now an inmate at a mental institution. Shortly afterward, the friend is dead of "heart failure", only the latest of a number of strange deaths at the place.

The Mod Squad sets to work busting an extortion racket run by a self-styled healer responsible for the death of Linc's friend. Julie befriends a wheelchair-bound man paying large sums for empty promises that his paralysis will be cured.

Pete falls for Ginny, who believes her jailed father is innocent of robbery.

Sammy Davis Jr. plays brash film star Willie Rush, who's feigning indifference to threats on his life. Pete: Michael Cole. Marci Weaver: Lola Falana. Linc: Clarence Williams III. Julie: Peggy Lipton. Cal Rush: Lawrence Cook.

A murderer stalks the suspended priest who heard his confession.

Julie poses as an unwed mother to infiltrate an extortion racket that blackmails parents of adopted babies.

The trio go undercover to take down an international drug ring.

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.

Julie is drawn into a bittersweet romance and blackmail.

While searching for a pair of murderers, the trio uncovers a link between murder, a stolen car and a threatened epidemic.

A businessman reports the theft of his partner's car---and admits that he wired it with dynamite, set to go off in eight hours. Unfortunately, the search for the car is complicated, as the thieves change the plates, and the car changes drivers more than once.

The squad aids an 8-year-old boy who calls an orphanage home. The reason: his mother won't free him for adoption. Lukie: Brian Dewey. Linc: Clarence Williams III. Velma Patch: Linda Meiklejohn. Pete: Michael Cole. Julie: Peggy Lipton.

While on a motorcycle trip to Mexico, Pete and Linc are detoured by a biker gang into a border town and held hostage along with all of the town's residents. The gang refuses to leave until they find out who in the town killed two of their members.

The daughter of a California governorial candidate is caught with drugs and is blackmailed.

Posing as hippies the trio investigate the bombing of an underground paper, resulting in murder.

Greer thinks a series of hospital drug robberies are inside jobs. The trio poses as hospital staff to solve this case.

A narcotics gang kidnaps Greer's girlfriend, widow of an FBI agent. In trade they want squealer Crowley who is testifying against them.

The squad is unaware that the writer they are assigned to protect, has a split personality.

During a campus demonstration a student protester is found dead. The protesters think he was killed by the police and the police think he was killed by another student.

Pete, Linc and Julie go undercover at Sims College to investigate a frat boy's mysterious death. Pete plays a running back, Linc an African exchange student, and Julie the object of desire for the star quarterback.

Tenants revolt against a racist slum lord and threaten the wrong person. Trio confronts the slum lord to no avail, until interventions from the Rabbi Tannenbaum convince him otherwise.

Sammy Davis Jr. plays Billy Lee Watson, a recovered drug addict who is accused of statutory rape by his alleged victim's father, who wants to close down the halfway house Billy has been appointed director of. Billy was trying to help the girl, who is herself addicted, and pregnant.

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.

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.

A Vietnam veteran awakens on the beach beside the body of his Army nemesis. Linc helps his old friend figure things out.