When a U.S. petty officer's body is found in Sydney's historic and haunted Rocks area, a decades-old Navy Cross medal holds the clue to solving the murder, leading the team on a wild ghost chase to catch a killer.

When a man in a concealed U.S. Navy jacket drops dead from a cocaine overdose on a crowded bus in Bondi, the investigation pulls Evie back into her past as an undercover narcotics cop.