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.

University professor Alex Wearing is found murdered in his study by the Post Graduate Co-coordinator, Vera Trenbath, a nosey interfering busybody. Assigned to the case is Detective Chief Inspector Alistair Fitzjohn. Fitzjohn is a detective from the old guard, whose methodical, painstaking methods are viewed by some as archaic. His relentless pursuit for the killer zeros in on Alex's brother, James, as a key suspect in his investigation. Compelled to clear himself of suspicion, James starts his own investigation and finds himself immersed in a web of intrigue, ultimately uncovering long hidden...

Sydney's Observatory on a balmy summer evening is the perfect venue for a cocktail party and, it would seem, a murder, for Peter Van Goren's body is discovered bludgeoned to death in the grounds. The first question Detective Chief Inspector Fitzjohn must answer is why Van Goren was present given his name does not appear on the guest list. The second is what was the subject of Van Goren's vehement argument with Richard Carmichael, one of the function's hosts. Meanwhile, Richard's son, Ben Carmichael, a photojournalist, returns to Sydney from an overseas assignment to find his fiancee, Emma...