Diagnosis: Murder (season 1)

Dr. Mark Sloan is charged with murdering Clairemont Hospital Director Havilland (James Cromwell) who was investigating him and two other doctors. Guest Stars: Ally Walker (plays Josie) Kristoff St. John(plays Thad), Steven Eckholdt (plays Richard), Carol Bruce, and Mark L. Taylor.

Dr. Mark Sloan investigates when a good friend (Bill Bixby)is accused of Murdering his boss.

One Of Mark's old students apparently jumps off a tall building, falling to his death. But Mark Sloan doesn't think he killed himself. He thinks he was Murdered.

An old girlfriend of Mark's, Rachael Walters (Suzanne Pleshette), returns to the hospital to operate on a U.S. Senator. She deliberately infects the Senator with a staph infection, leading to his death. Mark suspects Rachael in the Senator's death, and decides to investigate his old flame.

Dr. Mark Sloan (Dick Van Dyke) investigates a hit-and-run death that may involve a priest's confessional. Guest Stars: Robert Guillaume, and Sylvia Sidney.

A patient claims to be an amnesiac, but Sloan's probing of her past leads to a mob boss and the possibility that she's plotting to murder a hospitalized senator.

A comedian who was hosting a telethon for the hospital is murdered, so Sloan investigates. Guest Stars: Dom Deluise, Dick Martin, Granville Vandusen, Steven Anderson, Dick Van Patten, and Joyce Van Patten.

A millionaire dies after declaring his intention to leave his money to the hospital - and Sloan suspects the man's offspring.
Note: In addition to Sloan, Dick Van Dyke plays the millionaire Johnathan Nash and his Sons Julian Nash and J. Edison Nash and his Daughter Judith Nash. Guest Star: Michael Champion

When a dying man gives him a lottery ticket worth millions, Sloan must fight his way through competing claims in order to give the money to charity. Guest Star: Ken Kerchevel

Steve is framed for the murder of an internal-affairs officer. Guest Star: Richard Grant, Dennis Lipscomb, John Beck, and Boyd Kestner.

Sloan and Jack use connections to the underworld to figure out who set up Steve for murder. Guest Stars: Richard Grant, Boyd Kestner, John Beck, and Don Gordon

Sloan hunts for the stalker of a female pop star.

The body of an infomercial financial guru disappears without a trace. Guest Stars: Ned Romero (played Chief Joseph in I Fight No More Forever)

Sloan works to clear a friend in the murder of a magician. Guest Stars: Ray Buktenica, Jack Laufer, and Mitchell Whitfield.

Sloan uses a few leads to find out who's responsible for the death of a dance studio's unfavorable co-owner. Guest Stars: Paula Marshall, and Kristoff St. John.

Amanda is suspected of murdering an old college roommate who had written a tell-all book about her sorority sisters. Note: The dog that Amanda adopts she names "Yoda".

When a call girl who had been blackmailed ends up dead, Sloan sorts through her clients to find out who killed her. Guest Star: Gerald Mcraney

After the mayor is murdered, Sloan investigates the peculiar behavior of the politician's widow.

Sloan follows a few leads to a spa in his investigation of a con man's murder.

A convict that Sloan examines takes everyone at the hospital hostage - and two deaths occur during the situation.

Sloan suspects foul play after a friend dies in an earthquake. Guest Star: Allan Miller

Sloan comes to suspect that someone could have deliberately exposed a hit man to bubonic plague. Guest Stars: Julie Sommars (Julie March in the TV Series Matlock), and David Froman (Lieutenant Bob Brooks in Matlock).

Sloan goes undercover as a priest to help a nun catch a murderer in her convent. Guest Stars: Delta Burke.