Edward Tyneman's wedding night ends in his murder. Blake's aunt Dorothy, estranged from the Blakes since his father married, asks him to track down her granddaughter, Catherine Lucas. Jean's nephew Danny Parks, police officer in Melbourne, helps in Ballarat to solve the murder. In Melbourne, Blake goes to Catherine's address and discovers a dead woman in the cellar. The Melbourne police determine her cause of death and her true identity. Edward's father Patrick cannot bear the loss of his son and pulls strings to get Blake re-instated with the police, believing he will find the murderer of his son. Tyneman has high blood pressure. Milton Dunne, father of Harriet, Edward's new bride, is found murdered by a blow to the head. Investigations in Melbourne reveal that Milton was not Harriet's father; they were partners in scams of older people living in nursing homes. In the course of that, they met Catherine, who was quite ill.