Diagnosis: Murder (season 4)

A friend of Steve's winds up dead in a friendly-fire incident involving a veteran cop, but the shooting may have been planned all along. Kim Johnston Ulrich played the conniving widow. Guest Star: Jonathan Banks. Note: Michael Tucci does not appear in this episode.

Sloan and Jesse make contact with a patient who died from a genetically altered strain of smallpox. Note: Michael Tucci does not appear in this episode.

After faking an attack on herself just to win endorsements, a skater kills her accomplice and frames her rival.

Sloan collaborates with a tired medical examiner to help Steve hunt down a serial killer who intends to impress Sloan with his murdering skills. Guest Stars: Kurt Fuller, and John Schneider.

Sloan and Steve probe the murder of a private eye in the not-so-pretty world of modeling. Guest Star: Jessica Collins

A cardiologist and two business partners concoct a devious insurance scam. Guest Stars: Alan Rachins, Josh Taylor, and Stephen Lee.

A terrorist bombing leads to an undercover investigation involving an ambitious cop. Note: Michael Tucci does not appear in this episode.

Sloan discovers a murder victim amongst the trauma patients from a bus accident. Murderer: Paramedic Tanya Wells Guest Star: Richard Riehle

The drug-addicted daughter of a senator is killed during an argument, but a senior aide tries to make it look like an overdose. Murderer: Peter Trent

Sloan helps a lawyer probe a drive-by shooting at a high school. Murderer: Principal Wallace Morrison Guest Star: Piper Laurie.

Sloan's daughter escapes the wrath of her abusive trucker husband who ends up dead. Murderer: Andrea Rivers

Sloan looks for clues to solve the decades-old murder of his mentor. Murderers: Dr. Raymond Huxley and Dr. Christine Huxley

Sloan enlists his friend Ben Matlock (Andy Griffith) to defend Jesse, who's accused of murdering a resident. Murderer: Not revealed Guest Star: Lee Chamberlin.

With Jesse falsely accused of murdering Eric Spindler, Ben Matlock (Andy Griffith) gathers all the evidence to find the real killer. Murderer: Jeri Murdico Guest Star: H. Richard Greene.

Sloan assists Joe Mannix (Mike Connors) with an unsolved murder case from 1973.
Note: This episode serves as a sequel to the Mannix episode "Little Girl Lost". Guest Stars: Richard Gant, Julie Adams, Pernell Roberts, and Beverly Garland. Note: Michael Tucci does not appear in this episode.

The prime suspects in the murder of a country star are a driven TV producer and her timid songwriter daughter. Murderer: Laura Manning Guest Stars: Deanne Bray, Barbara Mandrell, Billy Ray Cyrus, Terri Clark, Linda Davis, Billy Dean, Joe Diffie, Eddie Rabbitt, and Reba McEntire.

A psychiatrist kills his estranged wife and tries to frame a patient. Murderer: Gavin Reed Guest Stars: Dwight Schultz.

A sexy, but sinister, pharmaceutical rep has every intention of winning Sloan's heart.

A beach boy is suspected of killing his girlfriend's brother - a gang member. Murderer: Roberto Guest Stars: Carey Van Dyke, and Shane Van Dyke.

A surgeon drops dead while operating on another doctor. Murderer: Dr. Jeff Everden

The pilot of an airliner escorting Sloan and Amanda to a medical conference in Europe is killed.

A wealthy woman, Claire Whitfield (Brynn Thayer) and her lover cook up an elaborate plot to bump off her husband, Elliott (Wayne Tippit). Brynn Thayer plays Leanne Macintyre On Matlock. Note: Charlie Schlatter and Michael Tucci do not appear in this episode.

A comedian stumbles in his attempts to murder his more successful partner, whose wife ends up dead. Murderer: Candy Zarkin Guest Stars: Harvey Korman, Tim Conway (Plays Tim Conrad), and Tom Gallop (plays Phil Zarkin).

A mad bomber whom Sloan helped put away breaks out of prison bent on revenge. Guest Stars: Carol Bruce, and Mary Kay Adams.