Perry Mason : Season 4

Tyrannical company president Hartley Bassett returns from the dead after two years. His first act is to fire Peter Dawson which makes Dawson the prime suspect when Bassett is found dead with two bullet holes in him. Perry thinks he has an ace in the hole this time when Dick Hart and his new wife, Teddi, both swear they saw a different assailant at the scene of the crime. Then Teddi and Dick disappear.

Perry defends Richard Hammond who is charged with killing his former girlfriend by running over her with his car.

Jim Ferris is having an affair with his uncle's bored young wife. They concoct a scheme to finagle $80,000.00 from the uncle by faking a kidnapping. Things go horribly wrong when secretary Betty Wilkins, acting as a go-between, is charged with the murder of Jim Ferris.

Perry is accused of obstructing justice in this case when he defends a woman who had previously faked her own suicide by running her empty car off a cliff. It seems as though the police found the body of another woman in the wreckage.

An heiress to a cosmetics company is charged with the murder of the company's owner.

When a man accused of a murder is freed from prison upon newly discovered eyewitness testimony, it starts a chain reaction of blackmail and murder.

A circus clown is charged with the murder of its part owner when a gun is slipped to him during a gun act.

Washed up pianist David Carpenter is knocked out and pushed over a cliff for insurance money. Carpenter's beautiful protege, Donna Ross, immediately comes under suspicion by the police.

Perry's fishing trip to Scotland is interrupted by seven year old Peggy Smith. Peggy is living at a boarding school and searching for her identity since she has no idea who her real parents are. After searching into the matter, Perry comes to believe that Peggy is the daughter of Clark Lawson and Margaret Jeffers Lawson. Margaret was the daughter of wealthy Courtney Jeffers who disowned her after she eloped with Clark. Both parents died shortly after Peggy was born. Jeffers, a mean and miserable

Lester Martin's life takes a horrible turn for the worse when a man breaks into his apartment, forces him at gun-point to drink half a bottle of Scotch, and then drives him into the country. Lester's circumstances then go from awful to good grief when he's charged with the murder of his step-father who was trying to takeover the family boat company.

Ann Farwell is miserable over the separation of her parents. Things aren't made any better when her father starts seeing Rita Conover, a scheming woman half his age. When Rita turns up dead both Ann and her mother think the other committed the crime which causes Perry great difficulty in defending the ranch hand who's been charged.

A suburban town mayor's secretary is accused of murdering the mayor's wife, who was engaging in blackmail to further her husband's career.

Slimy publishing tycoon Donald Fletcher buys controlling interest in a respectable but financially troubled publishing house. Fletcher turns things upside down by turning the publications into scandal sheet featuring photographs of scantily clad women. Edmond Aitken, whose family once owned the publishing house, wants to oust Fletcher but Perry tells him he has no legal basis on which to do so. Not to worry. Fletcher is found murdered in his apartment but the prime suspect is Aitken's wife,

Perry represents a citizen's group in hearings on a proposed aqueduct to be named after county engineer William Harper Caine. Perry gets a stop work order until a section of the proposed location can be checked for an underground spring. Eventually, Caine needs Perry's help when he's accused of murdering Roger Quigley, the project's chief contractor.

Ralph Duncan is a civil servant whose job is to inventory the estates of wealthy decedants. One day, he returns home with $153,000.00 worth of old greenbacks he discovered while going through a recently deceased old woman's home. Duncan took the money on a lark and was planning to return it the next day but his shifty cousin decides to purloin the bundle. Duncan is then accused of theft and later murder.

Womanizing playboy Loring Lamont has his sights set on Arlene Ferris, his father's shapely secretary. He lures her to his beachfront bachelor pad with seduction on his mind. Arlene slaps the rotter and flees taking Loring's car back into town. Things then go from awful to good grief for poor Arlene. After her departure someone stabs Loring to death and she's suspect number one.

Inventor Walter Randall wants a divorce from his cold-blooded wife Laura in order to be with Phyllis Hudson. Laura decides to get back at Walter by blackmailing one of his assistants into building a bomb that will destroy Walter's underwater sounding invention. While checking on the bomb in the warehouse, Laura is discovered by Phyllis and takes advantage of the situation by knocking her rival out. Phyllis manages to survive the explosion but she is later charged with Laura's murder.

Willard Nesbitt faked his drowning death in a boating accident so his wife could collect the double indemnity life insurance money. Nesbitt thought he had only a short time to live anyway. When Nesbitt's crooked business partner, James Castle, illegally cuts "widow" Eve Nesbitt out of a protitable deal he must rise from the dead to warn her. Then someone kills the "dead man" for good. The police smell insurance fraud and Eve Nesbitt is their number one suspect.

Crooked jewelry store owner Karl Addison learns that he needs an operation which will temporarily blind him. Addison makes plans to rob his own store knowing that his sightlessness will provide him with a perfect alibi. Things go wrong when someone kills the scheming Addison and steals the already pinched jewels. James Kincannon enlists Perry's aid when he's charged with the crime.

The setting in this episode is a small California town where because of a festival all men must wear beards. Paul Drake travels there to try to locate missing money which a former bank president embezzled. Paul eventually finds the money but he also finds a dead body as well. Perry arrives on the scene in order to straighten things out.

Contactor Pete Mallory is charged with the murder of a vacation resort developer.

Hilde Fursten and Tony Osgood work at the San Diego Zoo. When a new baby monkey is found missing, Hilde Fursten is blamed by Dr. Walther Braun, a visiting dentist. Boris Zelbowski also works at the zoo and is dating Frieda Crawson, Dr. Braun's nurse. That evening, Dr. Braun arrives at the zoo to perform oral surgery on a lion and is found dead in the lion's cage. Tony Osgood is accused of the murder when a witness sees someone wearing Tony's blue sportcoat near the lion's cage at the time.

Hard luck Claude Demay was sent up for six years in prison for starting a fire in a warehouse containing the valuable Nathan Claver art collection. After his release, Demay devises a plan to expose the real criminal, Leonard Voss, and prove his innocence. He tediously weaves a perfect imitation of a valuable tapestry supposedly lost in the fire and barters this tapestry to Voss in exchange for an original Buddah statue. Demay knows that the statue will prove that the collection was not destroyed

Advertising executive Herman Albright is in the wrong place at the wrong time wearing the wrong clothes. These mistakes cost poor Herman his life in a case of mistaken identity. Perry is called on to defend the fashion model charged with the crime. It seems as though horny Herman had been hitting on her for quite a while with no success.

Jerry Reynolds, an old war buddy of Perry's, is accused of killing an officer at Vandenburg Air Force Base during the investigation into some mysterious missile crashes.