Diagnosis: Murder: Season 4
Season 4 Lore Primer
Key plot threads, lore context, and character stakes you need to remember before diving into this season.
- Directly follows the overarching narrative developments of Diagnosis: Murder Season 3.
- Faction dynamics and core character alliances shift under escalating external stakes.
- Crucial mysteries introduced previously reach key turning points and narrative reckonings.
- Sets up serialized story arcs that build directly toward the climactic season finale.
Episode Guide
Season 4 Progress Shield
Murder by Friendly Fire
Sep 19, 1996
One police officer is accidentally shot by another during a raid gone wrong. Dr. Sloan investigates the victim's wife, the shooter, and a conniving lawyer when he suspects foul pla
Murder Can Be Contagious
Sep 26, 1996
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 a
Murder on Thin Ice
Oct 3, 1996
A figure skater hires her ex-coach to attack a rival skater. Dr. Sloan tries to prove her guilt.
X Marks the Murder (1)
Oct 10, 1996
Mark, Steve, et al, investigate a string of the so-called ""Casanova"" murders. Dr. Sloan loses his detached perspective when the killer begins calling Mark.
X Marks the Murder (2)
Oct 10, 1996
Mark, Steve, et al, investigate a string of the so-called ""Casanova"" murders. Dr. Sloan loses his detached perspective when the killer begins calling Mark.
A Model Murder
Oct 17, 1996
Dr. Sloan investigates a photographer, the overly protective mother of Jesse's friend's fiancée, in the murder of a private investigator.
Murder Can Be Murder
Oct 24, 1996
A respected cardiologist murders an innocent man in an insurance scam. Dr. Sloan reluctantly investigates his friend.
An Explosive Murder
Oct 31, 1996
A young undercover detective investigates a militia-type organization to solve a terrorist bombing witnessed by Mark. She has to decide whether to risk blowing her cover and warn D
Murder by the Busload
Nov 7, 1996
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.
A Candidate for Murder
Nov 14, 1996
His scheming advisor covers up the accidental death of the drug-addicted daughter of a U.S. Senator. Dr. Sloan and Amanda investigate.
The ABC's of Murder
Nov 21, 1996
An ADA sets out on a vendetta against an Asian youth, against both Mark and Steve's advice, after a drive-by shooting at a high school leaves one teacher dead.
Murder in the Family
Dec 12, 1996
Mark's daughter returns after eight years, leaving an abusive husband who later turns up dead.
In Defense of Murder
Jan 9, 1997
When a famous prostitute writes a tell-all book, an executive's job at Community General is in serious jeopardy.
A History of Murder
Jan 16, 1997
Mark investigates a 30-year old murder when the body of his old mentor is discovered entombed in a wall in the hospital.
Murder Two (1)
Jan 30, 1997
Jesse is arrested and charged with murder after a doctor testifying against Jesse in a malpractice suit is poisoned. Mark convinces his old friend, Ben Matlock, to defend Jesse.
Murder Two (2)
Feb 6, 1997
Amanda and Ben investigate the murder of Eric Spindler while Jesse continues to languish in jail.
Hard-Boiled Murder
Feb 13, 1997
Mark aids an old friend, Joe Mannix, in solving a 25-year-old, unsolved murder.
Murder, Country Style
Feb 20, 1997
When a musician is found murdered at a Country Music Awards ceremony, Dr. Sloan and company rush to find the culprit before the show ends and the crowd disappears.
Delusions of Murder
Feb 27, 1997
A devious psychologist uses hypnotism to facilitate his criminal acts, including the murder of his wife.
A Passion for Murder
Apr 3, 1997
An aggressive female pharmaceuticals representative stalks the hospital's new chief of staff after a one-night-stand, hoping to break up his marriage and have him all for herself.
Blood Brothers Murder
Apr 10, 1997
A beach boy involved with a gang member's sister is suspected of murdering him. Mark investigates.
Physician, Murder Thyself
Apr 24, 1997
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.
Murder in the Air
Apr 24, 1997
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
The Merry Widow Murder
May 1, 1997
A wealthy woman and her boyfriend dupe Mark and plot to murder her husband.
Comedy is Murder
May 8, 1997
A bungling comedian seeks revenge on his former partner when he's cheated out of millions.
The Murder of Mark Sloan
May 8, 1997
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.