When the UK Trade Minister's daughter is found dead in Sydney Harbour under suspicious circumstances, detectives delve into the dark secrets of those close to the victim to piece together the mystery.

A public appeal by Abigail wins over the press, as Max's attempts to win over Meg fail and the case throws open more questions than answers.

Abigail and Simon prepare to take Sophie's body home, as evidence from an anonymous informant provides a motive for murder.

Abigail faces increasing pressure to close the trade deal, Max struggles to get his informant back onside and a breakthrough fills a crucial gap in the case timeline.

Abigail makes a shock announcement, as the detectives close in on the crime scene and get closer to learning the truth about what happened to her daughter.