would have let Glover know of the police suspicions. Glover was put under constant police surveillance, including at one stage, with an automatic tracking device. To make sure that he was not being followed, Glover would drive around the block more than once, or drive the wrong way up one-way streets. Joan Sinclair On 19 March 1990, Glover killed his sixth and final victim in Mosman. She was 60-year-old divorcee Joan Sinclair from Beauty Point, with whom Glover had a platonic relationship. By this stage, police had Glover under constant surveillance and watched as Sinclair let Glover into her home around 10:00am. By 1:00pm, no sign of Glover or movement within the house was seen. Police and the surveillance team became concerned around 5:00pm, and got permission to enter the house at 6:00pm. Two uniformed police knocked on the front door (ostensibly to check on barking dogs) to no answer, and when looking through the rear glass door, saw a hammer lying in a pool of dry blood on a mat. Four detectives searched the house and found Sinclair's battered head wrapped in a bundle of blood-soaked towels. She was naked from the waist down and her pantyhose were tied around her neck. Her genitals were damaged, but Glover later denied raping her. After finding Sinclair's body, they then searched the house for Glover, who was found unconscious in the filled bathtub. Glover later told police he murdered Joan Sinclair and explained they had been having a relationship for some time. He said that he beat her about the head with his hammer, removed her pantyhose, and strangled her with it. Glover rolled the body onto a mat, wrapped four towels around her extensive head wounds to stem the flow of blood, then dragged her body across the room, leaving a trail of blood. He then ran the bath, swallowed a handful of Valium with a bottle of Vat 69, slashed his left wrist, and lay in the tub to die. Trial At the trial, commencing 28 March 1990, Glover pleaded not guilty to his crimes on the grounds of diminished responsibility. A psychiatrist said Glover had built up hostility and aggression since his childhood against his mother and then against his mother-in-law, who was said to "trigger" him. When she died, he had to take out his aggression on someone else. The psychiatrist who studied the case also added