After showgirl Mary Phillips becomes the second employee of the Tropicana Hotel and Casino to perish in a deadly auto accident, Tropicana owner Frank Howell hires the Angels to establish a motive for the killings. Kelly joins the hotel's show as a dancer, while Kris is hired as the new backup singer for lounge star Marty Cole.
Suspicion for the attacks falls on rival casino owner Mark Haynes, who is in cahoots with Cole to put Frank out of business. Haynes is unaware, however, that Cole has taken their plan one step further.
Jill's old flame Paul Ferrino persuades her to drive his experimental car in a Grand Prix, hoping that a victory will bring needed research funds. A mysterious explosion sets the Angels in motion.
The Angels travel to a Reno air show to track down stunt pilot Bill Freeman who may be the long lost son of Jonathan Stambler and heir to his substantial fortune.
A famous actress is mysteriously electrocuted at an exclusive spa and the Angels are called in to find the murderer and a missing manuscript she had at the time of her death.
Linda Frye, a young woman determined to win a major golf tournament, is shot and the Angels are called in to find out who is trying to kill her.
In hopes of contacting her beloved nephew Martin who died four years ago, Claire Ross sponsors Dr. Douglas Holden and his psychic research. Bosley, Claire's friend, brings in the Angels as fake psychics to check on possible fraud.
One by one, three beautiful cheerleaders disappear and the Angels are brought in to find them. Bosley informs the Angels that a note from a religious fanatic was sent to each of the missing girls before they vanished.
A young woman is murdered after she identifies a killer on a luxury liner. The Angels are called in to uncover a ring that helps criminals escape the country by cruise ship.
Looking for a thrill, poor little rich girl Samantha Courtney breaks into a greenhouse and stumbles upon a murder. Since Charlie is an old friend of the girl's aunt, the Angels are put on the case.
Bosley and the Angels are at a restaurant when Kris excuses herself and ends up seeing a man rob and murder the establishment's owner. After witnessing the crime, Kris is struck by the killer's car and develops amnesia.
A small-time crook who owes Charlie a favor leaves an urgent warning that someone is after one of the Angels. Kelly's houseguest, Sally, decides to stay in a hotel until the scandal has blown over but ends up in the center of it.
The Angels are called in to find the murderer of a gambler killed while investigating the suspicious antics of a dull racehorse.
Kris invites Bosley and the Angels to vacation in a small Arizona town where her aunt is Mayor and her uncle is Sheriff. Upon arrival they discover their headlights smashed, no rooms available and a suspicious lack of women in town.
A group of Angel look-alikes pull off several robberies, forcing the Angels to go undercover and on the lam in order to clear their names.
After the third victim of a bus strangler is found, the Angels are called in to find the killer. Their investigation centers around a disco.
A U.S. government agent is killed on the slopes of Vail, Colorado, while investigating a rumor that someone will kidnap Carl Hansworth, a special aide to the President. Fearing that the identity of all federal agents has been compromised, the government turns to outside help- the Angels- to provide protection.
During a check of the guests at Hansworth's hotel, the Angels encounter Vincenti Donatelli and his son, Paolo, both members of an Italian Radical group called the Patriots for a Free Society. Their suspicions of the group are confirmed when Sabrina is kidnapped, and offered an exchange for the voluntary surrender of Hansworth.
Jill Munroe returns to help the Angels find her kidnapped sister, Kris. After hearing an eyewitness account of the kidnapping, the Angels and Bosley are led to a tennis resort, where Jill is also kidnapped.
The Angels assume false identities in order to investigate a murder at a posh girl's school. During their probe, they discover that some of the girls are involved in the sale and abuse of drugs and alcohol.
The Angels investigate the mysterious disappearance of Sylvia and Sally, two participants in a promotional running race. Kris and Kelly enter the race and must literally chase their suspects.
After being called predictable, Bosley becomes annoyed and challenges the Angels to a game of hide and seek. He meets an attractive woman named Ellen before phoning in his first clue to the Angels. The two become the target of someone who's not playing games.
Ex-mobster Jake Garfield has just been released from prison for the murder of his wife. He claims that he was framed by a racketeer named Renaldi, so his nephew hires the Angels to investigate.
Charlie calls the Angels to a meeting which is actually a birthday party celebrating the Angels third year together. Charlie, Bosley and the girls recollect assignments, disguises and characters from their past adventures.