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.

With their men in jail or dead, the women who love gangsters try to get on with their lives. With Carl Williams in prison, a rival crime boss tries to undermine his empire. A young lawyer falls for her client, a convicted killer linked to the Carlton Crew. The police make a major breakthrough in identifying the mystery hitman they know only as “Benji".