John Mercer is released early from prison to serve in a covert state security squad as a government-backed assassin responsible for eliminating criminals and renegade police officers that the law cannot apprehend.

[1] Only five years into his life sentence for killing his aunt and uncle – a crime committed when he discovered their abuse of his sister – John Mercer is released from prison.

Jude and an accomplice have recently been acquitted for the savage murder of a young black man whose cousin, Elviss Gilroy, is making plans to avenge his death.

Lenny finds them there and orders Mercer to kill Scott Glover, a man just acquitted of the murder of the young, innocent, 20-year-old Marie Greene.

Meanwhile, Hugh Berry, the man who sorts out the paperwork to cover the unit's illicit activities, asks Lenny to take out a hit on his behalf.

A hit-and-run driver Trevor Bowyer rendered Hugh's grandson, Owen, mentally disabled, but only served two years for the crime.

Whilst emphatic that they are not a bunch of vigilantes, Lenny is left in no doubt that if he doesn't send his hit man to kill Trevor Bowyer, then Hugh will find one of his own.

Rose and John go undercover in an illegal cagefighting scheme when Lenny orders them to execute a veteran armed robber with a reputation for changing his name and appearance.