When television news reporter Hope Martin (Lynda Boyd) breaks a story about mercy killing, Detectives Leary and Shannon start digging around for more details, and Da Vinci calls a Coroner's Inquest to force Martin to reveal her source. The issue of euthanasia is divisive and as the investigation proceeds Da Vinci finds himself at odds with the police and his superiors about the reality and the ethics of what happened. His elderly father's recent debilitating stroke further complicates his response.

Danny Leary is back in town, but the reunion with his older brother Mick is far from idyllic. It looks like he is hooked on drugs and, unbeknownst to Mick, hanging around with two hoods that turn up dead.

When a baby dies from a brain injury, pathology turns up a lot of unanswered questions. Da Vinci is on the case. The police investigate a possible drug-related shooting.

Da Vinci investigates the death of an ex-cop turned boxer. Meanwhile, Mick and Angela, investigate a body found in a house.

Da Vinci lobbies for the creation of a safe drug-use site, as well as a red-light district. Meanwhile, Kosmo and Leary look into a possible multiple-homicide case.

Da Vinci investigates the death of an Aboriginal Peoples needle-exchange worker. Meanwhile, Rose and Leo take on a case after a man receives a severed finger through the mail.

Da Vinci investigates a body found by the train tracks. Meanwhile, Shannon and Rose ask Suki for help on a case.

After a death in Stanley Park Da Vinci is forced to deal with the media response. Meanwhile, Kosmo and Leary investigate a man's body discovered on a tour bus.

The team investiages a man found hanging in a vacant house and an elderly man found dead in the woods.

Da Vinci and Zack investigate a death on a golf course. Meanwhile, Shannon and Rose look into a student's drowning.

Da Vinci investigates an overdose, while resisting pressure to use grief stricken parents to further his bid for Chief of Police. Meanwhile, Shannon and Rose call in Kosmo and Leary when a homicide is connected to their case against Brian.

Da Vinci prepares for his interview in front of the police board. Meanwhile, Shannon investigates the murder of an American journalist.

Da Vinci investigates a hit-and-run involving the mayor's car. Meanwhile, Leary & Kosmo looks into the suspicious beating death of a drug dealer.

Da Vinci investigates the death of man who fell off the roof of his apartment building while attempting to steal cable. Meanwhile Kosmo and Leary uncover a witness in the police beating of a young drug dealer. Later, Zack and Da Vinci uncover some startling news about the mayor.

Da Vinci investigates a death among the mutinous crew of a Chinese freighter. Meanwhile, Kosmo and Leary delve deeper into the police beating of a young drug dealer.

The Mayor & the new Police Chief stand in the way of Da Vinci and his on-going investigations of a hit-and-run and a police beating. Meanwhile, Kosmo is investigated by Internal Affairs and Shannon & Rose work the case of a mummified baby found in a dumpster.

Da Vinci discovers he's the target of a private investigation. Meanwhile, Brian further implicates Sue in the murder of one of his informants.

Da Vinci manipulates both sides in the upcoming race to his own advantage. Meanwhile, Brian and Rose investigate the suspicious suicide of a key witness.

A decision from the Mayor and a fatality at the safe injection site bring Da Vinci's political future into focus. Meanwhile, despite being demoted to robbery, Kosmo is happy to learn the Crown is investigating Brian's policework, and Leary catches a break when a potential witness to Will's murder comes forward.

Da Vinci gathers his political allies hoping to emerge as a front-runner for mayor. Meanwhile, Leary races to arrest Will's murderer before the DEA can slip him across the border, and a body in a burned-out car and an arson fire at Kosmo's house may be ominously connected.