Water Rats

This episode opens with the divers searching a dam on a farm. They're assisting a homicide investigation that's tracing the movements of a prostitute who's gone missing, last seen getting into the owner of the farm's car. The divers discover the woman's body. McCall finds himself drawn to Roberts' wife, Margaret, who despite having her life turned upside down, remains defensive of her husband's actions, believing his story of self-defence. Goldie and the boat crew find an alcoholic dero in a warehouse, covered in blood. He tells them he thinks he's done something really bad, but doesn't know what.