In the Series Finale for 2007, tonight's murder mystery sparks an emotionally charged investigation when a dogfight between neighbours leads to the discovery of a buried secret. For Homicide it's the beginning of their toughest investigation yet.

Simon gets a mysterious phone message from Detective Senior Sergeant Sparkes. When others are reluctant to suspect the worst, Simon's gut tells him something is desperately wrong. His instincts prove correct and a blistering race against time is ignited when they discover Sparkes has been shot. The search is on to find him before the clock counts down. When a terminally ill woman dies in the arms of her husband, Waverley hands Jennifer a case that could make or break the young detective's career. This sticky dilemma is compounded by Jennifer's sneaking suspicion that she's been set up.

The murder of a prison inmate exposes his hidden identity...how hard should you try to find him when the victim appears just as evil? Jennifer is cornered by a dangerous past acquaintance and Simon struggles to cope with the aftermath of the deadly gold heist.

The detectives are on the trail of armed robbers who have stolen a truckload of gold. The Armed Robbery Squad's Detective Calabrese returns with Simon squarely in his sights, and Stanley and Jarvis face the ultimate betrayal.

When an Iraqi boy is killed during a police pursuit, Stanley and Jennifer clash with their federal counterparts to solve the case - was it a tragic accident or was he murdered? Meanwhile, Duncan's future in the force is in doubt, with Jarvis determined to see him kicked out of Homicide. Then a teenager walks in off the street and drops an explosive murder onto Duncan's desk.

A family is slaughtered during dinner and their mansion ransacked. The sole survivor is the eldest son and heir - could he be a cold-hearted killer? For Simon, finding answers is complicated by the return of an old adversary.

Homicide investigates the bizarre death of a man killed by an electric carving knife and discovers six urns filled with human ashes stored in his home. Was the deceased a victim or a killer? Meanwhile, Duncan fights his own personal battle... with shocking consequences.

When a baby dies at his first birthday party, everyone becomes a suspect. It is a devastating case that makes the detectives examine their own lives, relationships, as well as their profession. Duncan's personal and professional lives collide when Claire is arrested by the Drug Squad.

It's the innocent victim who was in the wrong place at the wrong time that motivates Homicide, as they investigate a sporting reunion that leaves the former University Eleven one man down. Meanwhile, Simon calls for back-up to deal with a persistent stalker.

When Stanley's god-daughter is found murdered and other teenage girls have disappeared, City Homicide have a personal stake in catching the monster responsible and Stanley may have to cross the line to do it.

Matt pushes the boundaries when he fails to turn in a letter from a capture fugitive. Instead, he fulfils the fugitive's wish to pass the letter to his sick mother, and finds himself caught up in a murder case which should have been open-and-shut. With his job on the line, Matt continues his invesitgation contrary to orders. Meanwhile, Jennifer struggles to hide her emotions in light of a traumatic event and seeks advice from an unlikely source.

When a wanted armed robber is found dead in an unrelated family crypt during a funeral service, Homicide bang heads with some unfriendly colleagues from the Armed Robbery squad. When the AR squad muscles in on the Homicide case, internal politics reaches boiling point. Meanwhile, tension tightens between detectives when Duncan's more than apprehensive to work with Jennifer.

The Homicide Squad investigate a seemingly straightforward suicide and uncover links between the deaths of children from five separate incidents to a mystery arsonist and murderer. Events take a terrifying turn when the detectives find themselves in the heart of an inferno. Meanwhile, a new face in the team battles to make her mark while another detective's actions put his future on the line.

The Homicide Squad investigate a seemingly straightforward suicide and uncover links between the deaths of children from five separate incidents to a mystery arsonist and murderer. Events take a terrifying turn when the detectives find themselves in the heart of an inferno. Meanwhile, a new face in the team battles to make her mark while another detective's actions put his future on the line.