Perry Mason: The Case of the Lethal Lesson

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 self-entitled woman is determined to keep her new man to herself at all costs.

A young theatre director is accused of killing a more famous Broadway director. Perry takes his case.

The chief suspects in the murder of an author are the numerous colleagues whom he continuously plagiarized.

Cranky but likable L.A. PI Jim Rockford pulls no punches (but takes plenty of them). An ex-con sent to the slammer for a crime he didn't commit, Rockford takes on cases others don't want, aided by his tough old man, his lawyer girlfriend and some shady associates from his past.

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

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..

One of the final entries in the series of romantic suspense adventures takes Jennifer and Jonathan Hart off to Sydney, Australia, where they plan to purchase a wildlife reserve from Jennifer’s old flame, the handsome and mysterious Elliott Manning.Manning challenges Jonathan, and their old rivalry is rekindled, with Hart besting Manning every time. When Manning begins to behave strangely toward Jennifer, a series of disturbing events reveals that this rivalry is no longer so good-natured, and the Harts find themselves bait in a trap.

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.

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.