Holloway and Goldie's partnership is shaken when a third detective, Michael Reilly, is assigned to the Water Police.

The death of a friend and a forgotten dream prompt Frank Holloway to farewell the Rats.

The working relationship between Jack Christey and Goldie gets off to a rocky start. Already compromised by their past affair, further strain is added when Jack insists on taking the lead in a murder case involving an old acquaintance.

Police constable Tayler Johnson becomes romantically involved with a cop on a diving course, but while out on a dive, he goes missing and Tayler realises how little she knows about him.

Michael Reilly and Goldie have to go undercover at a well-known swingers' haunt to coax a confession out of some murderers.

Detective Michael Reilly's friendship with madam Susie Abromovich results in them both being taken hostage by an armed robber.