Broadcast on the ABC network from September 22, 1976, to May 4, 1977 - with a total of 22 episodes - season one starred Kate Jackson, Farrah Fawcett-Majors, Jaclyn Smith and David Doyle.
Jill becomes a swimming instructor for the daughter of a wealthy Mexican businessman when they travel south of the border, their mission known only to the surviving pilot of the ill-fated flight.
Sabrina, Kelly, and Jill deliberately get stopped for speeding; when the sheriff 'finds' drugs he has planted in their car, they are sentenced by a kangaroo court to unusually long terms at the nearby prison farm.
The pressure intensifies, forcing the girls to withdraw from their lives (such as Kelly breaking up with her boyfriend) and take the only sure refuge they know: Charlie's gated mansion.
In their quest to solve the killing, the three (Kelly posing as a magazine photographer, Jill as a tennis instructor and Sabrina as a guest) infiltrate an exclusive hotel-resort.
They soon learn that the owner is an underworld figure who, after turning state's evidence and getting a new identity as part of the government's "witness relocation" program, has built a new criminal empire for himself.
Kelly is hospitalized with a minor head wound and Sabrina and Jill take up the search for Skip, trying to find his whereabouts using clues from his favorite nursery rhyme.
NOTE: The girl who drives Skip to the beach wears a T-shirt sporting another Aaron Spelling-Leonard Goldberg production, "Starsky and Hutch".
A military physician and a cruel drill instructor are discovered to be purchasing large quantities of cheap, inactive drugs and reselling them to the Army at top quality retail prices.
Jill becomes the star of a roller derby team when she goes undercover to investigate the mysterious death of skating champ Karen Jason, who is killed after being forced over the guardrail and into the audience during a rough and tumble race.
In search of clues, Sabrina poses as a state insurance investigator, Kelly as a pushy writer for a national magazine and Jill romances the team owner.
Jericho, a paradoxically gentle man who was a World War II French Underground assassin, is the prime suspect when a former member of his old liberationist team is killed.
In front of startled eyes, they stage a hit-and-run accident in which Jill is apparently killed with detailed floor plans and safe combinations to the casino in her possession.
As the scheme becomes apparent, the Angels discover something worse than simple pornography: the pornographic film, Sally in Sin City, shows proof of someone being where he should not be.
Cass Harper assures young girls of a lucrative job in a Las Vegas nightclub chorus line, in exchange for sideline prostitution.
All clues begin to point to the chief surgeon cited in the malpractice suit in which a man died, who displays erratic behavior due to his excessive use of amphetamines.
Jill masquerades as a disco-dance instructor, Sabrina as a rich but socially inept heiress and Kelly as a replacement photographer, supposedly sent by the blackmailer's shutterbug.
Kelly gets a job as an extra in Miss Gibson's "comeback" film, Sabrina poses as the leading lady's secretary, and Jill pretends to be a magazine writer, covering the picture.