Water Rats

Holloway and Goldie investigate an extortion racket in Chinatown. Sykes and Hawker compete against each other in an 18ft skiff race.

Rachel and Helen investigate the violent kidnapping of a diamond broker's wife, an incident that bears a striking resemblance to the disappearance of his first wife seven years earlier.

Holloway poses as a criminal when he goes undercover in an attempt to expose an armed robbery operation.