Diagnosis

Steve teams with a Naval Investigator when the apparent suicide of a military officer turns into a cold-blooded murder.

Doc Sloan goes undercover as a patient in a retirement home to solve the murder of an ex-cop.

Steve meets a new girlfriend on a television game show and then investigates when she's killed. Steve suspects her estranged brother, a doctor at Community General.

A young med student is suspected of killing her abusive husband after her story of murderous burglars proves false.

A devious home security programmer plots to murder the children of everyone involved in the accidental death of his son.

Mark is stunned to learn that his late friend Jake was married to two women. Steve juggles the investigation of Jake's murder and a blossoming relationship.

Mark investigates when a philandering chef is murdered during a televised charity cook-off.

The whole gang, plus Alex Smith and Amanda's rascals, are invited to observe the shooting of an episode of "Frontier Dad", a family series about Wild West hero Dash, starring Carl Simpson.

Mark takes on a temporary assignment as physician on a cruise ship and sleuths to uncover the killer of a disagreeable man.

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.

Mark matches wits with a beautiful jewel thief who's being framed for murder.

An outgoing radio host who's hunting for her birth mother is suspected of murdering a phony mother. Jesse's mother visits.

Susan Gibney [ Maya ], David Marciano [ Eddie Michaels ], Michelle Stafford [ Trish ], Robert Bailey Jr. [ CJ ], Rusty Burns [ Betsy ], Richard Cody [ Kip ], George W. Hartmann [ Tommy ], William Newman [ Chester Chumley ], Kathleen Lloyd [ Emma Bornstein ], Kevin McNally [ Paramedic ], Aaron J. Meeks [ Dion ], John W. Johnston [ Rick ], Patricia Place [ Mrs. Palmer ], Daniel Zacapa [ Waiter ], Channon Roe [ Lucas (uncredited) ] rc: Med Student Alex Mark's life becomes hectic when a look-alike gangster moves to LA and is caught up in a struggle for power.

Mark's life becomes hectic when a look-alike gangster moves to LA and is caught up in a struggle for power.

A med student, surrogate daughter to Madison Wesley, is sent to a rehab program to kick drugs. Once there, she's wrongly accused of murdering a fellow patient. Mark sets his sights on bringing down the real culprit.

Steve investigates a murder in which the main suspect is the husband of Mark's old flame. Steve and Jesse date the same girl.

A fiendish med student sells prescription pads to a drug dealer and murders his partner when she becomes too needy. Mark plays Columbo to nail the murderer.

Mark baby-sits Barbie, the daughter of one of Steve's old friends, while her father hides from a gangster.

Mark worries that his sleepwalking brother may be guilty of murder.

A comedy roast in Mark's honor is ruined by a double murder.

Steve enlists troubled teenager (he sure looked older than a teenager) Tommy to work as community service at a boxing club after too many brushes with the law. Tommy tries to control his temper. Mark finds that the club's sports drink is drugged, promoting aggressive tendencies in many of the boxers.

A criminal with a death wish stalks Steve.

Jesse saves a woman, Chloe, in a traffic accident that claims a jealous lover forced her off the road. Jesse looks out for his patient when her ex-boyfriend threatens her. Jesse rushes to Chloe's aid when her life is threatened by her boyfriend, and inadvertently kills him. Jesse finds himself the victim of Chloe's 'fatal attraction' as she pursues him voraciously. It gradually becomes clear that Chloe was the aggressor in her previous relationship.

A serial murderer strikes Community General every hour on the hour, choosing victims who've been seriously injured but 'brought back to life'.

Mark, Jesse, and Amanda are trapped in a hotel when it's quarantined after a deadly virus is released. They struggle to contain the virus, while at the same time trying to locate its origin. Meanwhile, a scheming seductress carries out her plan, using the virus as a diversion to rob a nearby bank vault.

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.

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.

Jesse's car breaks down while he and Susan are on their way to a fun-filled vacation in Carmel. The two are stranded in a small town where Susan spies a supposedly long dead beau, Greg. They eventually discover that he faked his death in order to plunder a shipwrecked vessel undetected. The townsfolk, all in on the scheme, murder Greg and pin the blame on Jesse and Susan.

Steve investigates a series of seemingly unconnected murders committed by terminally ill patients, to find the hidden thread.

Steve and his abrasive, confrontational partner are confined to a therapy home for 90 days after Steve shoots and kills a fleeing suspect. Steve's partner, Reggie, believes his wife and daughter are being held hostage by his nemesis, a belief that is furthered by a series of delusional events. On the outside, Jesse and Amanda work with Tanis Archer to solve the murder of a lab technician.

Amanda enlists Jesse's computer-nerd friends to find a killer, after she accidentally surfs across an on-line murder. Meanwhile, Jesse's girlfriend, Susan, comes down with a case of food poisoning after dining at Barbecue Bob's.

When a best-selling mystery author comes down with writer's block, she commits a murder herself in the hopes of stimulating her creative juices. The delusional author has help from her fictional heroine, Danielle Slade.

Shadowy figures haunt Jesse after he returns after being missing five days and believes aliens may have abducted him. Mark and Steve try to figure out what happened to him, while Jesse tries to stave off hallucinations, clandestine midnight meetings, and secretive government agents.

The hospital is the scene of a manhunt when a corpse comes to life and attacks Amanda, then leads Steve and the police on a chase throughout the entire building during which he kidnaps Jesse's girlfriend Steve. Mark learns the fugitive is on the run from NSA agents, who claim he's an international terrorist.

Mark stumbles onto a kidnapping case when the kidnapper accidentally calls the Sloan residence with a ransom demand. Steve runs to phone booths across the city a la Dirty Harry to safely rescue the child.

Two fiancées plot to murder the bride's father on their wedding day. The two review their perfect plan the night before the wedding. Unfortunately murder is never as easy as one might plan.

Carter and Caitlin kidnap Mark, forcing him to mastermind a 100 million-dollar theft. On the outside, Steve and Ron collaborate to find Mark. Meanwhile, Jesse and the Sloans buy a barbecue joint.

Mark, Steve, Jesse, and Amanda are all trapped in the rubble of Community General in the aftermath of the bombing. Mark tries to shake off the numbing effects of the explosion in time to save Amanda, who's suffering from a punctured lung and broken collarbone. After the dust settles, the hunt for Caitlin Sweeney begins. It's discovered that the Sweeneys belong to a terrorist organization, R.O.A.R.

When a young girl is rushed into the hospital in need of immediate treatment, but dies due to a HMO's negligence, Dr. Travis and Community General are sued for negligence. Dr. Sloan must choose between his ethical convictions and the hospital.

Dr. Sloan investigates to find out who's behind the death of a driver in a speedway crash.

When a rash of deaths at a high school revolve around one 'helpful' young girl, Dr. Sloan risks his own life to uncover the murderer.

Ratings seeking stunts by TV talk show hosts Darren & Mary has tragic results.

A madman charges into a Lamaze class with a bomb, claiming that a fertility doctor was cheating him. Everything is complicated further when said doctor turns up dead.

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.

A hospital emergeny preparedness drill turns deadly when an unpopular and ambitious nurse is found dead amid the chaos with an eccentric artist the only witness.

This episode takes place four months after Mark was convicted of murder. Steve is slowly recovering from his wounds and Mark is still rotting in prison. While Mark endures the taunts of fellow death row inmate Malcolm Trainor, Steve and Tanis Archer launch a rogue investigation to find Ganza's real killers.

When Steve is shot and falls into a coma, Mark does all in his power to find the assailant, even threatening a suspect with bodily harm. Mark finds himself the prime suspect when Steve's alleged attacker, Gordon Ganza, is murdered and all clues point directly towards Dr. Sloan.

A motorcycle stunt driver has a fatal accident while filming an action video. Steve investigates.

A dead mime leads to an investigation of a crooked auto dealer. Randy Wolfe, a woman who's apparently an expert at everything, leads the investigation while continually annoying Steve.

Jesse finally reunites with his father. After they narrowly elude an assassin, Jesse begins to realize his father isn't the accountant he's always claimed to be, but rather a spy. The Travis's attempt to discover who's sending the killers.

The Sloans run into plenty of industry politics when they investigate the death of television network executive, Rachel Woodrall. Seamy revelations about Woodrall's college sorority lead to the killer.

Steve and Ron lead the chase for the stolen nuclear material.

Mark and Amanda are assigned to the task force investigating an airplane crash. An adversarial FBI agent and Russian mobsters make their assignment more difficult.

Dr. Sloan investigates a plastic surgeon when an actress's death apparently results from an infection contracted during surgery.

Jesse's new part-time job as trainer of the pro basketball Mustangs turns deadly when he's accused of murdering a star player.

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.

A Malibu Hills fire is the backdrop for rising tensions between the residents; a disgraced stockbroker, a naturalist, a worried father, and a land developer. A worried Dr. Sloan deals with his own parental fears when Steve helps fight the fire.

Mark investigates when a teenage girl is murdered after threatening to reveal her affair with her older lover, a newly appointed state Supreme Court Justice.

Steve becomes embroiled in political intrigue after the murder of a city councilman's wife appears to be part of a larger political strategy. Steve investigates two mayoral candidates, the councilman and the chief of police, as well as a rogue detective and his partner, all with strong motives.

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.

A beach boy involved with a gang member's sister is suspected of murdering him. Mark investigates.

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.

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

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.

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

Amanda and Ben investigate the murder of Eric Spindler while Jesse continues to languish in jail.

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.

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

When a famous prostitute writes a tell-all book, an executive's job at Community General is in serious jeopardy.

Mark's daughter returns after eight years, leaving an abusive husband who later turns up dead.

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.

His scheming advisor covers up the accidental death of the drug-addicted daughter of a U.S. Senator. Dr. Sloan and Amanda investigate.

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 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 Dr. Sloan of an attempt on his life or finish her assignment.

A respected cardiologist murders an innocent man in an insurance scam. Dr. Sloan reluctantly investigates his friend.

Dr. Sloan investigates a photographer, the overly protective mother of Jesse's friend's fiancée, in the murder of a private investigator.

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.

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 figure skater hires her ex-coach to attack a rival skater. Dr. Sloan tries to prove her guilt.

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.

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 play.

In an episode reminiscent of Hitchcock's 'Strangers on a Train'", Dr. Sloan is drawn into a murder pact by a psychiatrist in need of money. The psychiatrist kills a woman pestering Dr. Sloan, expecting Mark to eliminate his 'problem'".

When a photo shop erroneously sends Dr. Sloan the wrong set of photographs, he becomes embroiled in the murder investigation of an escort girl. Meanwhile, Amanda's baby is about to come to term.

A visiting surgeon must deal with his alcoholism after a fellow doctor is murdered during one of his blackouts.

Dr. Sloan tries to solve a friend's murder while Steve investigates the deceased's ex-wife and her identical twin sister.

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

Amanda's cousin falls to his death when his motorcycle suddenly veers off the road. Amanda leads the investigation when it's discovered her cousin was drugged immediately before the accident.

An exhausted Jesse, coming off a 48-hour stint in the hospital, witnesses a man die in the parking garage. Jesse returns with help only to find the man alive. While everyone believes Jesse to have been delirious, Jesse insists he was correct, and goes all out to prove himself.

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

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

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.

Dr. Sloan suspects a cunning D.A. in the murder of an acquited defendant.

The murder of a beautiful woman around a marine encampment raises suspicions. Dr. Sloan discovers more to her than meets the eye.

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.

Ashley York murders her wealthy father and cleverly manipulates it to appear as though he killed himself. Dr. Sloan picks away at holes in the story, which leads him directly to Ashley.

IRS Agent Gretchen McCord returns when her lifeguard nephew is accused of murder.

Dr. Sloan investigates the murder of an antagonistic pro volleyball player. Steve searches for an alleged stalker while Amanda and Jack keep an eye on her teammates, none of whom are particularly upset over her death.

One of Steve's old ""collars"" gets out of prison and comes looking for revenge.

A rash of murders made to look like suicide leads to a dating service and its beautiful customers.

When an unpopular actor on a hot new medical drama (being filmed at Community General) suddenly dies, Mark suspects everyone from the writer to other cast members.

Mark has some unorthodox theories when several dead bodies are found drained of blood with puncture marks on their neck.

The newly crowned boxing champion is found murdered shortly after the bout. Jack and Amanda investigate the deceased's former trainer, his opponent, and his opponent's manager to find a way through a web of lies and deceit.

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.

Realizing that he's been duped, Mark goes all out to thwart the murderer's plans. Amanda and Jack go after Wallace Sterling, the crooked financier and art lover by selling a forged painting of a can of Cream of Celery soup.

A plastic surgeon dies due to an overdose of laughing gas... with no shortage of suspects. Mark campaigns furiously to exonerate Bonnie Valin, the victim's wife, while Steve makes a solid case against her. Meanwhile, Amanda's new electronic checking service is less than effective.

Jack and Steve vie for a young woman's affections as she leads them in an investigation of a PI's death.

At Jack's request, Mark operates on a Godfather-like mobster, Albert Bartell... and faces retribution from the man's son when Albert dies suddenly.

A cantankerous patient at Community General is given a double injection of his medication, eventually leading to his death. Jack suspects a doctor he's had a grudge against for a long time. Despite Mark's objections, Jack sets out to prove his ""enemy"" is the killer.

A famous actress, a patient at Community General, is implicated in the murder of one of her four ex-husbands. Against everyone's advice, Mark believes in her innocence and sets out to prove it.

Dr. Sloan's birthday is less than festive when he discovers the body of a prominent divorce lawyer in the Hospital pharmacy. When Steve arrives, the body is nowhere to be found. Mark and Jack work feverishly to find the body, find the culprit, and lead a tour of potential investors all at the same time.

Two women involved in a love triangle plot to murder a man, take his millions, and leave the country. Dr. Sloan investigates after his friend's mysterious disappearence.

Suspicion is cast on Norman Briggs after the chairman of a philanthropical medical group of which Norman is a part, is murdered. Steve and Mark attend the funeral to nail the culprit, who promptly falls over dead.

Dr. Sloan is under suspicion after his tax preparer is killed with Mark spotted 'hovering' over the body.

Chet Brooks, one of Jack's old friends, shows up on the run from gamblers, begging for help. Jack reluctantly loans Chet his car, only to have Chet and the car explode in a fiery wreck. Jack tangles with the underworld to find out what happened.

An unhappy politician's wife guns down her husband in an underground garage. Mark sees through her alibi and attempts to confirm his suspicions.

A prostitute, who tells Jack of her plans to blackmail her clients, is found dead of an apparent drug overdose. Dr. Sloan interviews her clients to discover the real cause of death.

A tell-all book written by one of Amanda's vindictive old college roommates contains embarrassing secrets of all four roommates. Dr. Sloan tries to discover what happened when the author is found dead and Amanda is the main suspect.

Steve's latest girlfriend, a dance instructor, is a suspect in a murder investigation when a dance club's owner dies mysteriously.

A team of Magicians Clark & Madison, breaks up when Paul Madison decides to go solo. Mark jumps to his friend Clark's aid when Madison turns up dead with Eddie Clark the main suspect.

Financier Robin westlin dies in Dr. Sloan's house, but when the paramedics at the scene, the body's gone. Everyone is certain the event was a figment of Mark's imagination. Dr. Sloan goes on a quest to validate his theory.

Dr. Sloan treats a famous singer,then takes her into his home as a homicidal closes in.

Two very different people are desperate for a diagnosis to their unexplained paralysis: textbook "good patient" Joe, 61, and more skeptical Ann, 44.

Matt, 20, experiences fainting spells that stop his heart, each one preceded by a sense of déjà vu. But is the issue with his heart -- or his head?

Lashay, 17, can't hold anything down that she eats or drinks. But negative interactions with previous doctors leave her family leery of the crowd's advice.

Six-year-old Kamiyah suddenly and briefly go limp dozens -- sometimes hundreds -- of times a day. Now the search is on to find others like her.

Day by day, Willie, 46, loses pieces of himself. He has memory loss, seizures, mood sings, a brain lesion -- but no diagnosis. Can the crowd help?

The parents of bright and charming, Sadie, 7, seek alternatives to the devastating brain procedure doctors propose to treat her frequent seizures.

The once-athletic Angel, 23, suffers from episodes of muscle pain so severe she often can't move. As she begins a nursing career, she needs answers.

Police detective Steve Sloan believes that top manager Nick Osborn has killed his boss, trust-owner Russell Cord. His father, senior hospital doctor Mark Sloan, is convinced that his long-time patient Osborn is innocent and soon discovers three other top employees of the Cord Group who also had reasons for killing their boss.