The Angels head to Mexico in search of a downed plane full of heroin. While trying to find the only survivor of the crash, they end up in the crossfire between two warring heroin dealers.

In a series of conspicuous accidents aboard a cruise ship to Hawaii, a young couple is murdered. The ship's owner hires the Angels to investigate. The murderer knows the Angels' true identities from the start and sends them death threats.

A gypsy ringmaster refuses to call the police despite many attempts to ruin his circus. His son calls for help and the Angels respond.

Dr. Franklin Perine and former astronaut Jim Britten run the Celestial Research Foundation, which promises contributors life in outer space in exchange for large donations. When a wealthy woman disappears, the Angels cleverly sneak into a meeting to investigate.

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.

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.

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.

Five million dollars worth of gold and bronze artwork is stolen in spectacular fashion from the Los Angeles Harbor. The insurance company that covered the artwork sends an agent to brief the Angels, and Charlie sends them on a Carribean cruise to intercept the dashing thief, Paul Hollister, and his accomplice, Wes Anderson. With Sabrina now married and retired from detective work, Kelly and Kris are joined by a new recruit, Tiffany Welles. Bosley stays in LA to trail Eleanor Case, the fence for the merchandise.

Hollister is attracted to Kris, and the feeling becomes uncomfortably mutual, especially after Kris learns that all the money from his crime will be used to smuggle distressed people out of Vietnam. As the result of the Angels' intervention, the thieves are able to work out a deal with the insurance companies that satisfies all parties.

Frank Desmond, a heroin addict Kelly helped send to prison, gets out of jail. He proceeds with help from a friend to take revenge.

The Angels are retained by an opera star to protect a diamond from a jewel thief. However, Jill has become romantically involved with the thief who invites her to participate in the heist.

The Angels are hired to locate accused jewel thief Ray Devlin, who has fled, jumping bail. Using a cover as a wealthy divorcee, Kris is to lure Devlin from an Arizona resort back to L.A.

When a wealthy Beverly Hills couple is robbed of valuable Egyptian artifacts, the Angels suspect the real estate baron, Barry Kingsbrook.