While the boat crews are kept busy responding to a series of suicide hoaxes, Frank and Rachel play host to a detective from Scotland Yard who has been sent to Australia to take possession of $5 million in recovered diamonds.
The boat crew's discovery of a man who has had his hand nailed to a tree by his neighbour leads the detectives into the investigation of his wife's disappearance and as they later learn, murder.
When a severed penis is found washed up on a beach, a search is launched to find the victim and the detectives soon find themselves dealing with reports of a stalker and a subsequent kidnapping.
Crime, punishment, betrayal, retribution, suicide, and family tragedy all play their parts when detectives Goldstein and Holloway find themselves investigating a prominent crime family carrying out million dollar heists on Sydney Harbour
A crooked grandmother, a fraudulent stockbroker and a water taxi driver who gets taken for a ride all baffle the detectives. Meanwhile, Blakemore's romance with Gillian Swain comes to an abrupt end.
Detective Jack Christey arrives to take on the new senior detective's job in the Water Police but his working relationship with Rachel gets off to a bad start when he takes charge of a murder investigation involving an old friend.
Tayler becomes romantically involved with another police officer while on a diving course. However, while out together on a recreational dive, her lover goes missing and Tayler discovers just how little she knew about this man
A prank call takes the Nemesis out to a harbour-side hotel where Gavin is abducted by a maniacal young man who has a desire to play cop for a day so that he can settle a grievance against those responsible for his brother's imprisonment.
When the body of a young man is pulled from the harbour, the detectives' investigation into his possible suicide reveals a dark secret about an even greater tragedy.
Christey and Goldie race to save two young girls whose lives are at stake after they inadvertently become caught up in a drug smuggling ring after stowing away on a cargo ship.
The detectives find themselves hunting a vicious serial rapist and killer who targets women whose handbags he steals and then returns. The investigation hits close to home for Hawker when his wife is attacked.
When a burning body is found floating on a sail board in the harbour, Christey recognises it as the work of a killer who is already in jail and must contend with the possibility that he may have convicted the wrong man.
Detectives Goldstein and Christey find themselves investigating a series of armed holdups in which the perpetrator is dressed up like a wild west cowboy, a style that matches another group of robberies committed twenty years prior
Our two Aussie heroes, Rachel Goldstein and Jack Christey, investigate the theft of valuable art work from a harbourside property owned by a once famous madam, Sadie the Scissors.
When a young boy's dead body is found, Goldie and Jack have to prove who is responsible before an enraged local community exacts their own just on the main suspect.
When the Water Police investigate the murder of a wealthy businessman and the apparent kidnapping of his wife, Hawker is re-acquainted with a woman he once loved. Gail informs Jeff she has started divorce proceedings.
When a lawyer is reportedly taken by a shark in the harbour, suspicions of foul play arise. Goldie and Christey investigate and uncover a complex web of embezzlement, underworld connections, and a bizarre love triangle.
While investigating a passport counterfeiting scam, Detectives Goldstein and Christen find themselves in serious danger when a planned sting operation goes wrong. Meanwhile, Mick has gotten involved himself with Suzi Abromovich.
A team from Homicide, lead by Det. Sgt. Joe Da Silva, arrives to begin the investigation into Rachel's death. The Water Police meanwhile continue their investigation into the illegal immigration and passport scam
Despite being assigned to investigate an armed holdup on board a luxury cruiser, Jack continues his search for Rachel's killer, butting heads with Hawker and Det. Sgt. Da Silva who want him to back off.
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 on their suspect's brother
