On the set of a popular daytime soap opera 'Mile High', actress Kris Buckner is being forced off by co-star Mark Stratton. When she says that she'll 'kill him before she leaves the show', she makes herself the prime suspect when Stratton is murdered by someone poisoning him. As an old friend, Perry Mason comes to the help of Kris and agrees to defend her. Meanwhile Ken goes in search of information with the help of fan of the show.
A con man who stages phony "lucky legs" beauty contests and leaves town with the money is found with a surgical knife in his heart by Mason.
When his former secretary is accused of a murder, Perry Mason gives up a judgeship to defend her.
David Katz is a world famous magician and he comes to Denver with his group to perform for a charity gala for disabled children. Also there is Perry and Della as all three are supporters of the charity. Kate Ford, an assistant with an arrogant attitude, tells David that she is, from now on, going to do an illusion in which an assistant is raised in a glass coffin only to disappear when the coffin is opened up in the air (while the assistant climbs out before the coffin is raised.) After a one night stand with David, Kate is pregnant and she blackmails David with this. David and his wife Judy can't have children so that comes as a double blow to them. However Kate, with her attitude, creates much hatred at her from the rest of the group. At the gala, the glass coffin is raised but when it opens Kate's dead body falls to the ground - strangled.
A very nervous man named Cartwright comes into Perry's office to have the neighbor arrested for his howling dog. He states that the howling is a sign that there is a death in the neighborhood. He also wants a will written giving his estate to the lady living at the neighbors house. It is all very mysterious and by the next day, his will is changed and Cartwright is missing, as is the lady of the house next door. Perry has a will and a retainer and must find out whether he has a client or a beneficiary.
The owner of a cosmetics company is unveiling a new cream which she claims she's been using. She's been keeping her age a secret and now reveals that she's 60 and owes her appearance to the cream. She's later killed and the formula missing. Her husband is arrested and Perry defends him.
Perry is at TV station "KGGY" to be interviewed but thanks to the interference of main anchor-person Brett Huston the interview is pulled. Mostly everybody hates Brett as Brett knows all the station workers secrets. He has also written a memo insulting all of the main station players - Vic St. John - the station manager, Twyla Cooper - the producer, Chuck Gilmore - the sports reporter, Gary Slate - the weatherman, Cassie Woodfield - the reporter and Gillian Pope. Brett is shot dead with Gillian's gun and therefore is arrested for the crime. Gillian calls in Perry, Della and Ken to investigate. As Della and Perry set out to solve the mystery, Ken gets close to Cassie but she is a suspect and when it appears that somebody is trying to kill her, the mystery deepens..
A priest is murdered and the main suspect is a nun.
Perry Mason ventures to Paris to defend a U.S. Marine Corps Captain accused of murdering a man suspected of being a Nazi SS Officer.
A painter, believed to be dead, returns to make allegations that a gallery owner is selling counterfeits of his work. Later, the artist is murdered.
Sleazy talk show host Ted Mayne writes a tell-all book, which enrages and embarrasses several very prominent women. One of them, actress Roxanne Shield, loses her composure during an interview and winds up making a televised death threat. Of course, when Ted is murdered, she is arrested. Witnesses claim they saw Roxanne outside his apartment that night and police later find the murder weapon in her car. Renowned defence attorney Perry Mason accepts the challenge of defending her in court.
Ken Malansky, a law student of Perry Mason's, is accused of murdering a fellow student. Perry is reluctant to take on his case as the victim was the son of a close friend.
Perry must defend the husband of an old flame from a murder charge.
Mason defends a man he had sentenced to prison when he was an appellate-court judge. Now, 18 months after the sentencing, a new witness turns up to prove the man's innocence. Mason steps in to defend the man.
Jordan White, a publisher friend of Perry, is called to a hotel where a guest, famous horror writer David Hall, has cleared out the hotel for a weekend and has called his "friends" - an actress, a fortune-teller, David's private assistant and the two remaining staff at the hotel to discuss business. They have come to the hotel as all of them are going to sue David over his new book - "The Resort" which characters are obviously based on Jordan and the guests. A practical joker, David plays tricks on them until he is thrown from the high tower of the hotel where Susan Warrenfield, the manager and owner of the hotel sees the fall and then Jordan at the tower causing the police to arrest Jordan. While Perry and Della try to solve the main mystery, Paul tries to find out who is trying to scare Susan away from the hotel. Could it really be a ghost or a more earthy visitor?
A young woman from Las Vegas wants Perry Mason to defend her father.
Perry Mason defends the husband of a famous rock singer who was found being killed after having had a tremendous discussion with her husband and her manager.
Anthony Caruso, an old friend of Perry Mason, comes to Denver on the request of Dee Morrison. She's married to famed photographer David Morrison, who wants to shoot a photo featuring his former models. The tricky thing is that all of his former models are also his former wives. But Dee knows Anthony can convince them to do it which he does. And David shoots them. Later Dee catches David it what appears to be in an inappropriate situation with his assistant. They have an argument and she leaves. Later David is found dead and she's arrested and Anthony defends her. And he suspects it could have been one of the wives
After giving the District Attorney another stinging defeat, Perry plans to take a vacation in China. That is, he was, until Rhoda, his old flame, meets him at a restaurant. It seems that her husband Moxley, who had been allegedly dead for four years, is alive and demanding money as she has married into wealth. The case escalates when the police find the body of Moxley and charge her with the murder.
A young theatre director is accused of killing a more famous Broadway director. Perry takes his case.