When a prisoner is abducted and murdered while on day-release, police embark on a massive man-hunt to find the killers. The 10-year investigation leads them to a ruthless underworld boss who is totally invisible to the police and the legitimate world.

Taskforce Tuno cultivates a dangerous and unpredictable informant in their hunt for Terry Falconer's killers.

The police have a major breakthrough on locating Anthony Perish after Frank agrees to go undercover. Perish arranges a chilling summit meeting with a bikie boss, and one of Perish's henchmen gets a lesson in obedience.