Jason Moran returns from self-imposed exile, determined to destroy his rival Carl Williams; death stalks a children's football match; Taskforce Purana finally gets the resources it needs to defeat the criminals; Benji is under constant police surveillance, so Carl is forced to find a new accomplice; Carl and Roberta celebrate their daughter's christening with a lavish party.

Danny "DK" Karam recruits his own private army to terrorise the Golden Mile. Ruthless newcomer Doc Kanaan stages a bloody coup to seize control of the drug trade from DK. With the corrupt cops banished from the Golden Mile, gang violence spirals out of control.

In the explosive final episode, Doc Kanaan plots to kill John Ibrahim and gain control of the Golden Mile. Joe Dooley and Strike Force Lancer smash DK's Boys and restore order to Kings Cross. Dennis Kelly hires a hitman to clean up his dirty past, as he lobbies for the job of Police Commissioner. Kim risks her life to avenge her unfair dismissal from the police force.

Carl uses his high media profile to accuse Detective Steve Owen of corruption; Graham "Munster" Kinniburgh is gunned down and Mick Gatto tries to convince Carl Williams to end the gangland war; "Benji" Veniamin agrees to kill his former mentor Mick Gatto, but it's Gatto who lives to tell the tale; Carl and Roberta are rocked by the death of their closest friend.

Detective Steve Owen finally gets enough evidence to arrest Carl Williams for murder. After nine years the gangland war is over.

Amid growing public unrest, the police establish Task Force Purana to combat the gangland war. Loan shark Mario Condello faces his own financial crisis, which he solves with brutal efficiency. Bitter rivals Carl Williams and Jason Moran take out contracts on each other’s life. Taskforce Purana detectives are furious when police corruption derails their investigations.

Melbourne standover men Brian and Les Kane have ventured into unfamiliar territory by providing protection for Bob Trimbole's Melbourne heroin dealers. But things turn sour when dealer Wayne Robb is robbed of $200,000 cash on the Kane's turf. The Kane's suspect it was Vinnie Mikkelsen and Laurie Prendergast, two of Ray Chuck's mates from the Great Bookie Robbery.

Allison questions her role in the Mr Asia syndicate after her life is threatened by a corrupt Federal Narcotics Bureau agent. Colourful racing identity, George Freeman, takes extreme action after police raid his illegal casinos. The Mr Asia syndicate suffers a major setback when a drug courier is arrested.

Aussie Bob Trimbole is pressured to arrange a gangland hit on his friend and colleague, Allison Dine. Meanwhile, paranoid and living in exile in the UK, Terry Clark must terminate his relationship with "Mr Asia". Also, George Freeman is determined to get revenge on his would be assassin, and aspiring hitman "Mr Rent-a-kill" gets his big break.

Terry Clark's drug empire starts to unravel when he is arrested for murder in the UK, while Allison is arrested by the FBI and becomes a star witness against organised crime. With his heroin supplies drying up, Aussie Bob plans Australia's biggest ever cannabis smuggling operation. Meanwhile, the Federal Police have a major win against corruption at the Narcotics Bureau.

In the series finale of Underbelly, Chris "Mr Rent-a-Kill" Flannery becomes a victim of his own success. But who would dare order a hit on Australia's most dangerous hit man?

Louis Bayeh vows to avenge the drive-by shooting of his house. Debbie Webb becomes a whistleblower on police corruption, with shocking results. Kim Hollingsworth plans revenge on a police officer who betrayed her trust.

John Ibrahim is under pressure following a spate of gang violence on the Golden Mile. Debbie Webb finds a powerful ally in her fight against police corruption. Kim Hollingsworth tests the loyalty of her new boyfriend with a sexy challenge. Dennis Kelly uses all his cunning to turn a corruption allegation into a career opportunity.

Supergrass Trevor Haken risks everything to gather evidence against his mates. Chook Fowler takes bizarre steps to avoid testifying on police corruption. Kim Hollingsworth's police career is jeopardised when she agrees to go undercover for the Royal Commission.

Lewis Moran hires Benji Veniaman to execute his son's, Mark Moran's killer. Subsequently, Veniamen is insulted by the Carton Crew and forms a dangerous alliance with their unpredictable rival Carl Williams; Steve and Jacqui's police instincts are tested when they try to disprove a murderer's alibi; when a criminal is shot dead multiple times, the Police realise there's a monster on the loose.

Carl Williams is now the undisputed king of the underworld, confident he can get away with murder; the police make the first major breakthrough in their investigations, but they may be too late to prevent another death; Benji's relationship with Carl and Roberta becomes increasingly personal.

In the mid 1970s, Kiwi charmer Terry Clark and "Aussie" Bob Trimbole form a deadly alliance that will change the face of Australian crime forever.

In episode seven of Underbelly, Terry decides to franchise his crime empire and expand into the UK market. Aussie Bob goes to extreme lengths to buy out Terry's share of the Organisation.

The Federal Police prepare to arrest crime boss and cancer sufferer Aussie Bob Trimbole. But a mole within the Feds threatens to create havoc with their investigation. Also, Alison Dine testifies at a coroner's inquest, and blows the lid on the Mr Asia syndicate.

Under pressure from the Royal Commission, Trevor Haken's paranoia reaches new heights. Drug boss Benny Kassab suspects a rat in the ranks, with deadly results. Police cadet Kim Hollingsworth is haunted by her colourful past.

The true story of glamorous crime queens Tilly Devine and Kate Leigh, and their deadly battle to control Sydney's underworld in the 1920s.

After a decade of gang warfare, Kate and Tilly have their final showdown. Phil Jeffs returns from exile and vows to drive Kate Leigh out of business. Frank and Guido fight to the death over the love of Nellie Cameron, and Razorhurst celebrates the grand opening of the Sydney Harbour Bridge.

Carl Williams begins his deadly revenge on the crime-controlling Carlton Crew, and tries to increase his ever-expanding grip over the Melbourne crime world; whilst Jason Moran is in jail, his brother Mark takes control of the family business; Detective Steve Owen is determined to prove an underworld murder.

Lewis Caine vows to avenge his best mate Benji's death, but can't trust his new colleagues; lawyer Zarah Garde-Wilson's plans for a romantic future are shattered when her lover is killed; Taskforce Purana finally gets the upper hand in their investigations.

A naive young Kiwi, Allison Dine, is swept off her feet by Terry Clark, becoming his lover, and most inventive drug courier.