Diagnosis: Murder season 2

Sloan is faced with both a murder investigation and an audit from the IRS.

Guest Star: Holland Taylor as IRS Agent Gretchen McCord.

Briggs is a suspect in the deaths of a charity's chairman and many board members.

Guest Star: Michelle Phillips.

Sloan suspects that something's afoot when a rich patient misses an appointment and vanishes. Guest Star: Sally Kellerman.

Note: Michael Tucci does not appear in this episode.

On his birthday, Sloan is forced to deal with both hospital inspectors and the disappearing body of a lawyer who was murdered in the hospital pharmacy.

Mark's celebrity niece (Morgan Fairchild) is framed for the murder of one of her ex-husbands (Gerrit Graham).

Sal Viscuso also guest stars.

Sloan probes the death of a media mogul who threatened to sue the hospital.

Guest Stars: Ken Kercheval, Christine Belford, and John Rubinstein.

Sloan operates on Jack's "godfather," who unexpectedly dies after the surgery.

Guest Star: Abe Vigoda (plays Jack's Godfather Albert Bartell).

Sloan investigates the murder of a private investigator whose last words are among the very few clues that can solve his death.

Guest Stars: Daphne Ashbrook and Kurt Fuller.

Mark's colleague (Pernell Roberts) is murdered, and his widow is accused of the crime, thrusting him into a personal dilemma.

Carey Van Dyke and Dyan Cannon also guest star.

Upon realizing he's made a terrible mistake, Sloan must clear an innocent man who's been sent to jail for the murder of Dr. Valin (Pernell Roberts).

Guest Stars: Stephen Root, Rif Hutton, and Dyan Cannon.

Mark and his sister Dora (Betty White) find her real-estate agent murdered in her new home, and Dora is forced to move in with Mark until the murder is solved.

Guest Stars: Susan Gibney, Kari Lizer (played Cassie Phillips on Matlock).

Sloan and his staff investigate the murder of a boxer who had just won a title bout. Suspects include the boxer he defeated, the boxers wife, a disgruntled boxer, and his promoter.

Guest Star: Stanley Kamel

Sloan investigates the murders of three men drained of their blood, including two of the most eligible bachelors in Los Angeles.

Sloan gives the police advice when the star of a medical TV series dies during filming at Community General.

Guest Stars: Ian Ogilvy, Denise Crosby, and Diedrich Bader.

When Alex Forman, a long-time patient and friend of Mark's, hangs himself, Mark suspects foul play. Alex and two other apparent suicides were customers of the same dating service Perfect Couples, an amazing coincidence. In fact, the police computer said that the odds against it were 64 million to one. What Mark and the others couldn't figure out was how one makes someone hang himself without leaving bruises on the body or drugs showing up in the autopsy. Amanda and Mark send Jack to join Perfect Couples to investigate. When Jack gets there to apply for membership, the flirtatious receptionist, Fawn (Rebecca Chambers), all but asks him out. Jack needs to write a biography, and Amanda and Dolores write it for him. Amanda delivers it to Perfect Couples on her way home, so Jack doesn't see it. They say to Mark that they had always wanted to create Mr. Right. The bio is so effective that 62 women try to date Jack on the first day. Among other things, the bio says that Jack takes 2-hour bubble baths (with his dates) and drinks Armagnac (brandy). Jack is mobbed by women everywhere he goes and says he feels like a Beatle. Renée Coleman stars as Gloria, a beautiful, flirtatious patron of Perfect Couples, whom Jack dates because she dated all three of the "suicides", making her a suspect. Her violently jealous ex-husband, recently released from prison, becomes another suspect, after he attacks Jack.

A paroled murderer whom Steve helped put away stalks Sloan for revenge. He's consistently one step ahead, but his arrogance and aggressive behavior may be his undoing when his fiancée asks for help in escaping his tyrannical reign.

Sloan investigates the death of a women's volleyball player who was being stalked.

Guest Stars: Nancy Everhard, Yvette Nipar, Alex Datcher and Sam Jenkins

Gretchen McCord comes back to LA to help defend her nephew a lifeguard who was on duty when a swimmer drowned under mysterious circumstances - and Sloan suspects a larger plot.

Guest Star: Holland Taylor as IRS Agent Gretchen McCord.

Steve is taking a course from a shy lawyer, Arnold Baskin, who is almost run over right after class. Agnes, a paralegal at his firm is also taking the class and picks him up off the ground. Agnes guessed that someone at the firm was reading the case files and selling the names of key witnesses who then end up dead, and she was investigating. The perp thought Arnold was investigating, because Agnes used his name when she accessed files, and so he tried to murder him. Steve and Jack help Agnes and Arnold find the identity of the perp. Guest Stars: Mitchell Whitfield, and Kenneth Mars.

Note: This episode was intended to be the pilot for a spinoff.

Amanda discovers a black-market baby ring in a maternity home while searching for a friend (Kim Johnston Ulrich) who gave birth to quadruplets. Bo Jackson also guest stars as the creative nanny hired by Jack to look after the babies.

Guest Star: Dwight Schultz

Sloan investigates a series of potentially deadly mishaps plaguing the cast of The Young and the Restless.

Guest Stars: Eric Braden, Kristoff St. John, Lauralee Bell, Doug Davidson, Melody Thomas Scott, Jeanne Cooper, J. Eddie Peck, and Heather Tom.

Sloan probes the death of a rock star whose wife believes he was murdered by an alien who may be their child's biological father.

Guest Stars: Jason Carter and Robert Gossett.