The cases of master criminal defense attorney Perry Mason and his staff who handled the most difficult of cases in the aid of the innocent.

Set in 1932 Los Angeles, the series focuses on the origin story of famed defense lawyer Perry Mason. Living check-to-check as a low-rent private investigator, Mason is haunted by his wartime experiences in France and suffering the effects of a broken marriage. L.A. is booming while the rest of the country recovers from the Great Depression — but a kidnapping gone very wrong leads to Mason exposing a fractured city as he uncovers the truth of the crime.

The New Perry Mason is a revival of the long-running hit television series about Erle Stanley Gardner's brilliant defense attorney.

The alleged suicide of a gubernatorial candidate triggers a series of mysterious deaths leading to the governor's mansion, and "Wild" Bill McKenzie, a friend of Perry Mason, is on the case.

A priest is murdered and the main suspect is a nun.

A young woman from Las Vegas wants Perry Mason to defend her father.

Perry investigates the murder of a former madam and uncovers a multimillion dollar banking fraud in the process.

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.

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.

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.

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

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.

A gangster who has commited all kinds of crimes is accused to have killed his wife. As he was not the murderer in this case Perry Mason intents to find the killer...

Perry must defend the husband of an old flame from a murder charge.

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.

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..