Coroner Dominic Da Vinci opens hostility from his ex-wife/pathologist, her new lover/Chief Corner, and detective Leo Shannon when he wants to look back on old cases involving prostitutes who suffered alcohol poisoning that he now suspects maybe the acts of a serial killer.
Meanwhile, new Homicide detective Mick Leary investigates the death of an infant's death due to heroin overdose.
Dominic pushes at the string of dead prostitutes for a connection, but when clues lead to a suspect, he gets pushed out for Homicide. Leo, however, believes he is also being shut out for missing evidence that could have caught the killer years ago.
With Charlie Joesphs the main suspect, everyone begins to tighten their respective investigations to rope him, but only one gets to him first.
In the meantime, a father's suicide accidentally kills his son as well.
The morals and ethics of euthanasia is debated when a reporter releases a witness account of a mercy killing, prompting an inquest to find the reporter's source. The issue touches upon Dominic's personal life as his father has suffered a recent stroke.
Meanwhile, Mick takes in his brother who has gotten himself into some trouble.
Some bad heroin is being circulated that results in a rise of deadly overdoses. One of these fatalities is the daughter of a Member of Parliament whose infant daughter has gone missing.
As Dominic looks to hire a caretaker to help his mother with his father, a fire strikes an elderly care facility. When residents' bodies are found tied to their beds, Dominic looks to the owners who have a sketchy history with their facilities while Homicide looks at a potential suspect.
A transgender body is found, the wounds on their body leading Dominic to believe that it might have had something to do with their participation in sadomasochism. While Sgt. Regan is hellbent to get the case carried by Homicide, Dominic gets embroiled in powerful people trying to keep their names clean.
The body of a street kid is found, appearing to be beaten to death, potentially because he was working as an informant. The case strikes up strong emotions in Dominic as it reminds him of something that happened to him in his past.
A high school girl is found shot at a party. The implications of it being suicide are clouded by rumours circulating around her boyfriend. Dominic's peak into teenage life during the investigation doesn't help his understanding of his daughter.
After a drunk night out, Dominic has lost his car and can't recall what happened, which leads him and others to fear that he maybe responsible for hitting a homeless man. While trying to recall the details, Dominic buries himself into helping Mick and Leo's investigation into a year-old skeleton found buried by a bridge.
Patricia assembles information on Charlie Josephs for a conference she has been asked to speak at. During this, she begins to look at evidence surrounding his murder, which causes problems for Leo who's already under pressure to wrap up the case.
At the same time, the narc's body is found in a freezer in Danny's night club, which sheds the truth to Kosmo.
Meanwhile, Dominic lets Morris handle a case of a male prostitute found dead by the Spanish banks.
While attending a Homicide conference in Seattle, Dominic discovers several cases in other cites, that not only share similarities to each other, but also to a recent homicide in Vancouver. Everyone begins to hunt down a serial killer who is drugging women, and dumping their bodies, working their way up the Pacific Northwest.
Further investigation shows that the serial killer everyone is looking for is actually a couple, and one of their victims successfully escapes to aid Mick and Leo. However, trying to capture both of them proves difficult when the couple's crimes bring out a jurisdiction struggle between Canada and the United States.
Dominic causes controversy when he makes comments about suggesting a red-light district in the wake of 28 missing prostitutes. A 29th body is connected to a young girl who recently joins an escort service, and has two people on the streets trying to find her.
Meanwhile, Mick and Kosmo investigate the death of a man found in the bathroom of a councilman who's trying to avoid the implication of a homosexual engagement.
With the recent killing a copy of the killings years earlier, the convicted suspect takes a lawyer who pushes to get the case re-examined where Leo finds evidence that could set him free.
Mick and Kosmo look at the escort's death, which leads to the same agency that employs Madeline.
Dominic and Homicide investigate the in-custody death of Vincent Marx. While looking for the suspect, questions are raised on Regan's involvement in the original investigation that convicted Marx.
Meanwhile, Patricia tries to have one of Morris' cases, a "death by fear" incident involving an old woman, ruled as a homicide.
Dominic is partnered with Zack McNab and Kosmo to piece together a high-speed police chase that killed another motorist and a pedestrian.
Mick and Leo investigate an armoured car hold-up that ended with one of the guards shooting one of the robbers.
Dominic and Leo try to sort out a political mess when a prime minister is found dead in a hotel, but moved shortly afterwards.
Kosmo and Mick are called to what they think is a standard domestic dispute-turned-homicide.
A boating accident involving a family of three fishermen is taken to inquest. While still mourning the death of his father, Dominic must filter through the family's grief to uncover the truth behind the tragedy.
When skeletons are uncovered in two backyards, Dominic and Homicide trace the murders to a welfare scam run through a boarding house, potentially perpetrated by the least likely person imaginable.
A sexually abused child's dead body is found, which reminds Detective Marlowe of an older case of sexual abuse involving a child. Dominic and Homicide use a witness's recalled memory to go after their suspect, the boy's music teacher.
Meanwhile, Mick investigates a crime scene with blood everywhere, but no body.
When a man is killed in a police shooting, Dominic calls an inquest. Between the varying testimony and the man's troubled mental history, it must be determined if the police reacted in accordance with procedure, and what exactly the man's intentions were.
Dominic and Leo try to think of what to do with the winnings from a lottery ticket that was purchased by a now deceased man.
Mick strikes up a friendship with a man he meets at a card game.
A child dies when he falls from a swing, but an investigation begins when there's evidence that the death was clearly related to a violent shaking.
Leo questions a few suspects to get to the answer to a potential drug-related shooting.
When a man is arrested with a prostitute bound and gagged in the trunk of his car, Da Vinci suspects the possibility that he's guilty of something more serious.
Meanwhile, Morris and Shannon look into the death of man found electrocuted.
The fantasy world of Williams begins to crumble when his appointed psychiatrist fears his intentions, is caught violating the conditions of his bail, and even his own wife has her doubts of his innocence.
Dominic looks into the suspicious death of a panhandler, but is agitated by the careless system.
Leo and Mick investigate a double murder in an office building, while Kosmo and Morris tackle an odd case of a woman found dead with a chopstick in her eye.
Songs: Bocephus King -- The Way The Story Goes
Dominic is put in a position when a prisoner, serving time for killing a cop, wants him to file a writ of habeas corpus because he claims he died in custody.
Meanwhile, a search is out for a young boy whose mother was beaten to death, as Morris looks into a man found dead in an elevator.
A father finds it difficult to accept Dominic's ruling in the death of his daughter.
Leo and Mick investigate the murder of a squeegee kid, as Patricia finds a man already autopsied back and ready for another autopsy.
Kosmo and Dominic try to determine whether a man's death was helped by a young boxer dishing justice for his abused mother.
Meanwhile, Leo and Mick look into the murder of a cabbie as Patricia, Det. Marlowe, and Chick walk some medical students through a crime scene investigation.
Songs: Puentes Brothers -- corazon en fuga, Puentes Brothers -- esta es noche, Jimmy Witherspoon -- Spoon's Life Blues, Quartango -- Tango sulla morte d'un eroe
Dominic's inquest into an accident involving a propane truck could be hampered by a resistant witness.
When the skeleton of a missing person is found with evidence of murder, Kosmo and Mick go undercover to gather evidence on the most likely suspect.
Songs: Sonny Rhodes -- Shame On You
Dominic looks into the circumstances that led to the death of a man left outside of a hospital.
Meanwhile, homicide investigates the unsettling murder of an infant.
Songs: Jaye Gazeley, Vincent Gale, Ian Tracey -- Get Your Family Home, Hellenkeller -- roccer
Dominic suspects negligence is the cause of a deadly accident at a construction site.
A camper found with a dead body in a casket leads Leo and Mick into a murder case. Kosmo is approached by a woman who thinks her husband has been replaced with an imposter.
Songs: Maria Muldaur and Taj Mahal -- Soul of a Man
A girl is found dead in a trunk, having pulled a "Houdini" in order to be shipped into Canada.
Leo and Mick investigate the death of a pool player burned along with his car.
Songs: Dutch Mason -- Hock My Ring, Rosco Gordon -- Now You're Gone
A mother loses her young son in a river, but Dominic suspects something is wrong when he finds out that it isn't the first time she's lost a child in an accident.
Kosmo and Roy question a husband when his wife suddenly disappears following a loud argument. Mick and Leo investigate a doctor shot while driving on his way to work.
Songs: The Paperboys -- Fox Hunters Waltz
Dominic is given the impression that suicide maybe the cause of a jockey found dead in one of the race track's stalls.
Mick is approached with the task of looking into the past of a former member of the Guatemalan secret police in order to find out who had injected him with a deadly poison.
While on the scene, Mick and Leo's investigation into a convenience store shooting runs into Dominic's examination of the scene of a fatal hit-and-run. With the driver missing, everyone realises that their suspect is a junkie holding himself up in a building.
Songs: Simon Kendall -- Hymn for Unbelievers, K. Subramanian and Trichy Sankaran -- Mayatita Svarupini
Dominic hopes to find out the cause of death of a friend and native activist. However, he is getting mixed clues from a witness and inconclusive opinions from pathology.
Kosmo and Roy investigate the circumstances that led a woman's dead body to be left in a dumpster.
Dominic, pathologists, and homicide detectives give their testimony in a murder trial.
An at-home cancer patient is shot in what appears to be a robbery.
An ex-convict found hanged in the woods appears to be a simple suicide, but a few stories floating around say differently.
Kosmo takes a look into an unsolved case concerning missing prostitutes.
Human bones are found at a construction site while Patricia starts a part-time teaching job at a university.
An elderly woman is found dead in the washroom she was apparently living in.
A limo a man dies in is stolen before the body can be picked up.
Dominic, who's recently been feeling uninspired in his job, looks into the unusual death of a young child.
Mick and Leo investigate the double shooting of a stripper and bouncer who worked at the same club.
Songs: Billy Boy Arnold -- Hello Stranger
When an imprisoned refugee dies while on a hunger strike, Dominic persists for an inquest despite the issues he will have to wade through.
Meanwhile, Mick and Leo continue their investigation into the double shooting, not knowing that it will take an unexpected turn.
As Dominic and forensics examine Josie's death, Mick and Leo are pulled from the double shooting case they were working on and hand it over to Kosmo to wrap up.
While Kurtz looks into the shooting to see if it was by the book, Leo does his best to look out for his partner, Mick, who appears to be in a state of shock and confusion following the incident.
Kurtz assigns Mick and Leo to a case of a missing pregnant woman while Dominic probes into why a woman who had recently given birth would have reason to kill herself.
Patricia makes sure the prostitute nicknamed "Queenie" had no family so that she can proceed with an autopsy for her university class.
Dominic hopes to find the identity of a man found dead in a railroad car along with how he could have managed to get locked in there in the first place.
Meanwhile, Leo and Mick look into the death of a jumper, as Patricia holds off her autopsy on Regina King when she finds something that might help Kosmo's investigation into the missing prostitutes.
Dominic and Zack look into a car accident while Mick and Leo investigate the murder of a woman in a penthouse.
Meanwhile, Kosmo tries to find something to tie Alex Mills into Queenie's death.
Dominic tries to figure out what caused a fire that claimed the life of a father and son.
Kosmo shifts her focus towards finding out what happened to Alex Mills' wife.
Leo and Mick are called into the dig site when one of the skeletons is found with a bullet hole in its skull.
At the request of Gina Otaviani, Dominic looks into the death of a female prisoner's newborn child.
Kosmo's undercover operation on Alex Mills' wife gets underway while a new piece of information is found at the Chinatown dig site.
Songs: Amos Garrett -- Lost Love
Dominic's business of the day is interrupted by a call of a man having jumped off his apartment building. When Homicide is called in, they have to deduce whether the man's suicide was provoked by someone or if he was simply off his medication.
A young boy's suicide prompts Dominic to look into a doctor who has had a history of overprescribing patients.
Meanwhile, Kurtz puts the pressure on Kosmo to produce results in her undercover investigation.
Songs: Amos Garrett -- I Ain't Lying
When a man is found dead in the trunk of a car at the site of an accident due to unrelated circumstances, Dominic looks into why he was there in the first place.
Mick and Shannon are handed the task of investigating the death of a homeless man in a zoo's bear pit.
Mick and Leo work on a kidnapping case, but hit an unexpected turn when the person picking up the ransom money is accidentally killed and the money is grabbed by a bystander.
Dominic is troubled by Mr. Steadman's presence at the scene of a house fire that bears some resemblance to a case five years ago.
Dominic tries to determine how a man came to be crushed by a parking garage door.
Mick and Leo investigate the death of a John in a neighbourhood watch area.
Kurtz asks Kosmo to look into her neighbour's suspicion concerning the death of a university professor's wife.
Despite Dominic's protests, the bodies of a mental institution's graveyard are being relocated, but is called in when two bodies have been found buried together. While investigating why, he continues looking into the Moorehouse fire.
Mick and Leo are called to the scene where a homeless man killed a man's wife, but Leo suspects something is off about the husband's story.
Kosmo questions the university professor.
Dominic continues investigating the Moorehouse fire by looking back at the original fire when new evidence is brought up.
Rose helps Mick and Leo on a convenience store robbery after it turns to homicide.
Kosmo helps Suki look into the death of a drug dealer.
Dominic and Zack work to figure out how a man was dragged to his death.
Leo and a clearly disoriented Mick chase a lead into the two native robbers.
Kosmo continues looking into Danny Zinn's death by trying to find his girlfriend.
Dominic is called out to two scenes. One in which he tries to unravel how a man had fallen to his death; another where he calls in homicide to determine if a woman duct taped in the backseat of a car was killed by her husband.
Meanwhile, Kosmo continues investigating Zinn's death by looking into some theories floating around.
Dominic probes deeper into the Ravenhood burial while trying to persuade Pierce's girlfriend to help save his reputation, and thus Dominic's red light proposal.
With Rose's help, Leo and Mick now have names to navigate their investigation into the robbery killing.
Kosmo comes to Suki to get help in finding Zinn's killer.
After a break in the Moorehouse investigation, Dominic hears some disturbing testimony on the history of Ravenhood, and that Steadman has hired a consultant to look into the autopsy of his daughter.
Mick tries to hunt down his gun after a late-night altercation, leaving Rose and Leo to continue their robbery investigation.
Suki gets put into a corner when she comes to grips with the possibility that her partner, Brian Curtis, maybe responsible for killing their informant.
Dominic hears more testimony from another patient at Ravenwood.
Rose and Leo look for clues in the aftermath of the father and son car crash.
Kosmo continues looking into the connections to Zinn's death.
Dominic tries to figure out how a fishing boat's crewman's death is connected to a drunken bar scuffle.
Believing her informant to be faulty, Kurtz pulls Kosmo off Zinn's murder case.
Dominic investigates the death of a disabled man who had drowned in a lake as well as a hit-and-run incident.
Mick and Leo look into the death of a cabbie who is found beaten in his cab.
Brian Curtis makes a major move against Councillor Jack Pierce.
Leo and Mick are called to investigate an attack on Kurtz's neighbour, but her mental history poses problems in getting to the truth.
Dominic has trouble getting a body out from a tough spot in order to examine.
Suki comes to Kosmo on something that might tangle Brian Curtis.
Kurtz's neighbour is found in the trunk of her car, and again, her psychiatric history makes piecing together the circumstances that led to her death difficult.
Dominic gets news that Jack Pierce has pulled his support for the red light district.
Kosmo tries to bring Sue back to her side.
Dominic is concerned when he finds yet another case of an elderly person's death and looks for a connection.
With Suki's help, Kosmo and Mick investigate the death found at the site of a break-in of a grow-op house.
Meanwhile, when hearing that a needle exchange program was busted by cops, Dominic brings it to the Mayor who counters with a tempting offer.
Dominic looks at the death of a boxer shortly after a boxing match and grows suspicious when he finds out that he was being treated by a doctor Gus Cook.
Leo and Rose are called to the scene of a field where a man's body had been dumped.
Kosmo takes Mick to look back at clues in the murder of Brian's informant.
Mick and Kosmo investigate the murder of a family, the father, who dies shortly afterwards, and surviving son being their only suspects.
Leo and Rose look for more clues as to why anyone would murder a stockbroker.
Dominic ramps up his campaign for Chief of Police.
Rose and Leo investigate a man's death threat revolving around the severed finger that belonged to an informant.
Dominic is called to the scene of a dead man stuck in a diner's chimney.
Mick and Kosmo begin using Sue to get close to Brian Curtis.
Dominic seeks out the reason how a kid managed to get run over by a train. In his investigation he gets assistance from Brian Curtis who he soon learns from Mick and Kosmo is blackmailing Jack Pierce.
Suki helps Rose and Leo look into a car theft, which may very well be tied to the murdered stockbroker.
Dominic and Leo look at the death of a man found stabbed in the chest, suggesting a suicide.
Mick and Kosmo investigate a robbery turned homicide when they find that the woman was to testify in a murder case.
Dominic looks into the murder-suicide of a couple.
Rose and Leo follow up a report of a severed head that ties into a missing persons case.
Sue makes mention of a new drug dealer to Brian Curtis in Mick and Kosmo's first step in a sting operation.
Dominic talks to the media about a man found dead in a park, appearing to be the victim of gay-bashing.
Kosmo and Mick investigate the death of a pickpocket.
A real estate agent has been hung in the house he was supposed to be selling.
Rose and Leo investigate the death of an elderly man found in the woods.
A constable named Klotchko sets out to make Da Vinci's life difficult.
A man gets into a car accident and robs an ambulance for morphine, leaving a stroke victim to die before she could get to the hospital.
Dominic looks into an accident that killed two painters on the job.
Kosmo and Mick execute the drug deal they hope to hang on Brian.
A car accident leaves a man dead in a golf course.
Another seeming car accident kills a university student. The man who survives, the girl's professor, is left a suspect.
Meanwhile, no one has seen or heard from Brian since the coke deal.
When Rick is found murdered in his apartment, a resurfaced Brian is intent to paint Sue as a suspect.
Dominic believes that some bad heroin is being sold while readying his aim for Chief of Police.
As Dominic makes final preparations for his interview with the police board, Leo is tagged with a temporary partner to investigate the death of an American journalist.
Mick and Kosmo try to tie Brian to Rick's murder while Brian has Sue plant a murder weapon.
A case of police brutality maybe linked to an accident by the train tracks while the mayor's car is involved in a hit-and-run.
A man's apparent suicide occurs in a law office, but Leo and Rose can tell something is amiss.
Dominic looks into a woman's death outside of a church and her connection to its priest.
Zack begins looking into the theft of the mayor's car while Mick and Kosmo talk to a friend of Roy Cardinale.
Dominic investigates the death of a man who fell off an apartment building while attempting to steal cable.
When no knife is found on Pierce's car, Curtis has to rethink his strategy.
Dominic tries to rule on the death of the captain of a Chinese freighter, but is complicated by jurisdictional issues.
Rose and Leo continue to investigate the suicide in Richard Norton's office, but are catching wind of a cover-up.
Brian Curtis begins spreading rumours on Sue.
Dominic is called to the scene of a strange case of a man found hanged off a bridge.
Rose and Leo investigate the findings of a mummified infant.
Dominic is suspicious when Kurtz and Jacobs simultaneously stall the Roy Cardinale case.
With Kosmo's help, Mick investigates the death of an old friend whose ship is found to be robbed of drug he was smuggling.
Dominic comes across a couple of inexplicably changed stories: one from John Dunne, another covering for the mayor.
Internal begins to look at Kosmo's relationship with her informant Sue.
Dominic confronts the Mayor and Chief of Police to sort out their dirty dealings, but makes more progress when he talks to the Mayor's wife.
Brian coerces another "witness" against Sue.
Leo copes with the loss of his wife.
A woman found dead in her car turns out to be a private investigator looking for dirt on Dominic.
Sue is arrested and the testimonies from the reliable witnesses Brian has brought forward help pins the charge of murder on her.
Chick helps Mick put surveillance on the Summers' boat.
Dominic makes peace with the Mayor and Chief of Police long enough to get their support on his red light proposal.
Kosmo gets the runaround in trying to talk to Sue who is being held in interrogation.
The media goes into a frenzy when Dominic's red light proposal is backed up, but in the midst of it, they get wind of the Mayor's role in the hit-and-run.
Rose works a case of a wife who believes her husband was killed by his co-workers.
Mick and Kosmo move on to an investigation of an escort killing a client in self-defence while the Tuan siblings try to throw Mick off their trail.
Leo's investigative work for Dominic quickly turns up interesting findings.
Dominic tries to chase a body down in the sewers while the Mayor's time in office runs low.
Kosmo finds out that Kurtz failed to pass down a piece of information to her on the missing women case.
Curtis is bumped to homicide and tagged with Rose, as Leo begins a hotel security job.
Dominic gets backing to help persuade him to run in the Mayor's place.
Rose and Curtis investigate the death of a drug counsellor, a key witness in the Sue Lewis case.
With a lead gone, Mick continues to try and uncover his friend's murder by approaching a DEA agent.
A conflict of interest is feared when Dominic looks at a constable shooting a man in self-defence at a safe injection site.
Kosmo begins working with Suki in robbery, but receives optimistic news when she hears that the Crown is dropping some of Brian Curtis' cases.
Both Mick and Rose catch big breaks in their respective cases.
Dominic plans to announce his run for Mayor, but must outsmart interim Joyce Simkins who strongly opposes his red light proposal.
A fire started at Kosmo's house may be tied to a man found immolated in his car.
Mick rushes to catch his lead suspect before he slips past the border.
Sue suffers an overdose in prison.