Water Rats

Frustrated by what he perceives as the police's lack of progress in solving Rachel's murder, Jack, now suspended from police duty, steps up his vigilante efforts to bring her killer to justice.

When a young woman is found drowned in the harbour, the detectives look into the activities of the last people to see her alive, forcing Mick to have to investigate one of his oldest mates.

Christey and Reilly's search for an escaped convict suspected in the attack on a retired prison officer brings them into conflict with undercover cops involved in an ongoing drug investigation.

Caught off guard while transporting a prison inmate, the Nemesis is ambushed as part of an escape attempt and Jack is taken hostage.

As the resources of the Water Police are mobilised to try and locate Sophie and her two kidnappers, Jack goes off on his own to track down his daughter and her abductors.

Jack and Alex's investigation into the identity of a floater pulled from the harbour leads them to discover a fugitive running from a death penalty she faces in her home country.

A diver shot in the leg leads to the possibility of a hit by the Russian mafia.

A young man is found shot dead while repelling but his friend is too afraid to tell what happened.

A slot machine is found on the bottom of the ocean with a pair of handcuffs attached to it. The question is what kind of crime has lead to this?

The Water Police and Homicide detectives continue to search for Chris Kollias. It's not until the end of the episode that Holloway learns of Knocker's probable involvement.

An Asian crime racket is suspected when two dead bodies, killed by carbon monoxide poisoning, turn up in the harbour. They've both got evidence of having been tied up and they're both Asian.

Attending a bushfire at a coastal national park, the Boat Crew notice bloodied tracks in the sand. Following them, they reach a man digging a body into a shallow grave.