Returning to Sydney, Detective Ramesh Ryan is promoted to the Homicide Squad. Zoe Yang joins him there. Now a detective herself, she is assigned as his junior partner. Straight up, the cops are off and running-investigating the discovery of a murdered company director. Following the clues, Detective Ryan finds that this and a second murder may be linked to past events.

As the pressure mounts for a quick solution to the case, the detective finds that he too, is in the killer's crosshairs. But Ryan is distracted from the investigation by a romantic encounter with an old university friend. He also worries about his mother, Mumta, and her new obsessive desire for grandchildren from her only son. Could this be linked to her recent medical tests? And there's another pressing problem-the plague of rats in his apartment block.

Detective Ryan's hands are well and truly full!