When Laurence Harford, a prominent businessman and philanthropist is found murdered in the historic Rocks area of Sydney, Detective Chief Inspector Fitzjohn is asked to solve the crime quickly and discreetly. After barely starting his investigation, uncovering a discarded mistress and disgruntled employees, a second killing occurs. Meanwhile, Laurence's nephew, Nicholas Harford, has his certainties in life shaken when he becomes a suspect in his uncle's death, and receives a mysterious gold locket that starts a chain of events unravelling his family's dark truths.