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The Best Episodes of Diagnosis: Murder

Every episode of Diagnosis: Murder ranked from best to worst. Let's dive into the Best Episodes of Diagnosis: Murder!

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Dr. Mark Sloan is a good-natured, offbeat physician who is called upon to solve murders.

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Episode Rankings

  1. #1 Fan Favorite
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    Diagnosis: Murder Season 6 Episode 13 - Voices Carry
    8.5/10(114 votes)

    S6:E13

    Newly retired detective Harry Trumble returns to the force when it appears 'The Clown Killer', a murderer Trumble chased for more than a decade, has emerged from obscurity to kill again. Mark is reluctant to help Harry investigate the Clown, in part due to a rift between the two, but also because Mark suspects Harry has something to do with the Clown's reappearance.

    Director:Christopher Hibler
    Writers:William Rabkin, Lee Goldberg

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  2. Diagnosis: Murder Season 8 Episode 12 - Sins Of The Father (1)
    8.4/10(117 votes)

    S8:E12

    A young woman is assassinated while Dr. Mark Sloan is examining her, setting off an investigation that plunges Mark into dark memories of his own childhood.

    Director:Victor Lobl
    Writer:Joel Steiger

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  3. Diagnosis: Murder Season 4 Episode 23 - Murder in the Air
    8.3/10(115 votes)

    S4:E23

    Dr. Sloan and Amanda investigate when the co-pilot of the airplance carrying them to a medical conference is murdered and the remainder of the flight crew are incapacitated with a mysterious illness.

    Director:Tom Chehak
    Writer:Tom Chehak

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  4. Diagnosis: Murder Season 7 Episode 11 - Santa Claude
    8.3/10(103 votes)

    S7:E11

    Hospital horticulturist Claude is revealed to be an escaped convict living under an assumed name for the past 10 years. Mark fights to shelter Claude from extradition while striving to prove his innocence.

    Director:Nancy Malone
    Writers:Burt Prelutsky, Steve Brown

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  5. Diagnosis: Murder Season 8 Episode 13 - Sins Of The Father (2)
    8.3/10(99 votes)

    S8:E13

    Mark must find out why his dad left him as a child.

    Director:Victor Lobl
    Writer:Joel Steiger

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  6. Diagnosis: Murder Season 3 Episode 2 - Witness to Murder
    8.2/10(122 votes)

    S3:E2

    Dr. Sloan takes in an abandoned young girl found at the scene of a murder, while Steve and Jesse go about tracking down the killer.

    Director:Paris Barclay
    Writer:Unknown

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    The 20 WORST Episodes of Diagnosis: Murder

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  7. Diagnosis: Murder Season 3 Episode 7 - Love is Murder
    8.2/10(118 votes)

    S3:E7

    Steve heads up the investigation when a serial cop killer is on the prowl, while inadvertantly dating the killer.

    Director:Tom Chehak
    Writer:Nan Hagan

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  8. Diagnosis: Murder Season 4 Episode 17 - Hard-Boiled Murder
    8.2/10(199 votes)

    S4:E17

    Mark aids an old friend, Joe Mannix, in solving a 25-year-old, unsolved murder.

    Director:Christian I. Nyby II
    Writers:William Rabkin, Lee Goldberg

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  9. Diagnosis: Murder Season 4 Episode 22 - Physician, Murder Thyself
    8.2/10(145 votes)

    S4:E22

    Dr. Sloan investigates when an unpopular colleague drops dead while performing an operation. Mark investigates his fellow doctors when tests reveal the deceased was poisoned.

    Director:Christian I. Nyby II
    Writer:Unknown

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  10. Diagnosis: Murder Season 6 Episode 12 - Trapped in Paradise
    8.2/10(111 votes)

    S6:E12

    Steve goes undercover as a doctor in a private community after several mysterious deaths occur within its confines. Steve is 'aided' by a tabloid reporter posing as his wife.

    Director:Bruce Seth Green
    Writer:Ernie Wallengren

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  11. Diagnosis: Murder Season 4 Episode 2 - Murder Can Be Contagious
    8.1/10(111 votes)

    S4:E2

    A burglar inadvertently becomes infected with a deadly virus. Dr. Sloan and Jesse are subsequently exposed to the virus after Jesse stumbles upon the thief's dead body. Both Mark and Jesse are confined to Mark's home while Steve and Amanda investigate the drug company that manufactured the virus, in the hopes of discovering an antidote before Jesse runs out of time.

    Director:Vincent McEveety
    Writers:William Rabkin, Lee Goldberg

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  12. Diagnosis: Murder Season 4 Episode 14 - A History of Murder
    8.1/10(111 votes)

    S4:E14

    Mark investigates a 30-year old murder when the body of his old mentor is discovered entombed in a wall in the hospital.

    Director:Christian I. Nyby II
    Writer:Gerry Conway

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  13. Diagnosis: Murder Season 4 Episode 26 - The Murder of Mark Sloan
    8.1/10(116 votes)

    S4:E26

    Dr. Sloan is stalked by a mad bomber whom he helped incarcerate. Norman and Mark are the main dissenters in negotiations to sell the hospital to a corporate raider.

    Director:Christopher Hibler
    Writer:Steve Hattman

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  14. Diagnosis: Murder Season 5 Episode 4 - Deadly Games
    8.1/10(116 votes)

    S5:E4

    Community General is already under increased security, with a high-profile criminal hospitalized, when an important businesswoman is brought in. Mark suspects her security guard has deadly intentions.

    Director:Christopher Hibler
    Writer:Jeff Peters

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  15. Diagnosis: Murder Season 5 Episode 16 - Rain of Terror
    8.1/10(152 votes)

    S5:E16

    A spat between a girl and her boyfriend leads to an apparent murder, leaving the girl and her mother with a dead body, just as dinner guests Mark and Amanda arrive. Panic sets in, when the body disappears, the power goes out, the roads are impassable, and the attacks begin.

    Director:Christian I. Nyby II
    Writer:Craig Tepper

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  16. Diagnosis: Murder Season 8 Episode 5 - The Patient Detective
    8.1/10(115 votes)

    S8:E5

    Steve nearly dies in a car accident and think a murder happens. No one believes him.

    Director:Victor Lobl
    Writer:Stephen A. Miller

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  17. Diagnosis: Murder Season 8 Episode 7 - Hot House
    8.1/10(111 votes)

    S8:E7

    An abusive man who, along with four other people, was a contestant on a reality show is murdered while living in a house that is monitored 24 hours a day. After the killing, Mark enters the house as the man's replacement to see if he can uncover what happened.

    Director:Victor Lobl
    Writer:Terry Curtis Fox

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  18. Diagnosis: Murder Season 8 Episode 16 - Being of Sound Mind
    8.1/10(108 votes)

    S8:E16

    Dr. Sloan tries to save Jesse and Amanda from a murderer who is out to kill them in order to obtain a multi-million dollar inheritance.

    Director:Christopher Hibler
    Writer:Burt Prelutsky

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  19. Diagnosis: Murder Season 2 Episode 11 - Death By Extermination
    8.0/10(149 votes)

    S2:E11

    The body of a dead real estate agent is found in the walk-in closet of Mark's sister's new house. Mark and Steve have to work around Dora Sloan's annoying habits while investigating the murder.

    Director:Christopher Hibler
    Writer:Dan Wilcox

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  20. Diagnosis: Murder Season 3 Episode 5 - Murder on the Run (1)
    8.0/10(118 votes)

    S3:E5

    A man wrongfully convicted of murder takes Dr. Sloan hostage. Dr. Sloan hears his story and works to prove the man's innocence. Jesse works feverishly to rescue Mark.

    Director:Christian I. Nyby II
    Writer:Steve Hattman

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  21. Diagnosis: Murder Season 3 Episode 6 - Murder on the Run (2)
    8.0/10(120 votes)

    S3:E6

    Dr. Sloan shields George Karn from both Steve and Lt. Delaney while investigating his wife's murder.

    Director:Christian I. Nyby II
    Writer:Steve Hattman

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  22. Diagnosis: Murder Season 3 Episode 10 - Living on the Streets Can Be Murder
    8.0/10(133 votes)

    S3:E10

    Dr. Sloan investigates a free health clinic after several homeless people turn up dead... with missing organs.

    Director:Christopher Hibler
    Writers:Carey Hayes, Chad Hayes

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  23. Diagnosis: Murder Season 3 Episode 18 - Left-Handed Murder
    8.0/10(113 votes)

    S3:E18

    Dr. Sloan is the executor of his friend, Preston Michael's, estate after Michaels is found in the body of a shark. Things turn interesting after traces of poison are found in Michaels' body and three women, all apparently married to Michaels, attend the reading of the will.

    Director:Jonathan Frakes
    Writer:Mark Masuoka

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  24. Diagnosis: Murder Season 4 Episode 9 - Murder by the Busload
    8.0/10(118 votes)

    S4:E9

    A bus accident brings multiple victims into the hospital. Amanda does the bulk of the investigating when its discovered that a casualty in the accident was actually murdered.

    Director:Christian I. Nyby II
    Writers:William Rabkin, Lee Goldberg

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  25. Diagnosis: Murder Season 4 Episode 19 - Delusions of Murder
    8.0/10(119 votes)

    S4:E19

    A devious psychologist uses hypnotism to facilitate his criminal acts, including the murder of his wife.

    Director:Christopher Hibler
    Writers:Eric Estrin, Michael Berlin

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Best Episodes Summary

"Voices Carry" is the best rated episode of "Diagnosis: Murder". It scored 8.5/10 based on 114 votes. Directed by Christopher Hibler and written by William Rabkin, Lee Goldberg, it aired on 1/21/1999. This episode scored 0.1 points higher than the second highest rated, "Sins Of The Father (1)".