Water Rats

Harrison and the divers arrive at Pitt Town Lagoon to uncover a body found by a Ranger. The body is that of a teenage boy, and is similar in appearance and MO to the murdered teenagers.

Holloway and Goldie stake out stunning homes in the waterfront, due to robberies in the area. They arrest an eighteen year old, Nicholas, and he's armed with a police issue gun.

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.