Experts involved with Sydney’s infamous “Granny Killer” case believes the serial killer committed as many as six more murders.
John Wayne Glover was sentenced to six life sentences over the murders of elderly women in the lower north shore between 1989 and 1990.
Retired homicide detective Brian Collis appeared on Channel 9’s Under Investigation series on Wednesday night. He said it was highly likely that Glover had many more victims.
Mr Collis had “no doubt” that the deaths of two elderly women on the Central Coast five years prior to the killing spree were at the hands of the known killer.
Josephine McDonald, 73, was sexually assaulted and strangled in her Ettalong apartment in 1984.
She was hit in the head with a hammer and had pantyhose wrapped around her neck.
Two years later, Wanda Amundsen, 80, was beaten with a hammer in Umina.
Similarly, she was also killed with a hammer in her bathroom.
In both crime scenes, the placement of the bodies and the method of murder fit perfectly with Glover’s methods.
The “Granny Killer” was known to visit his half-sister and mother Frida on the Central Coast often.
Though by the time police drew the connection between the murders, Glover was already serving a life sentence in prison.
Police finally arrested the “Granny Killer” after finding him inside a bath at the home of his friend, Joan Sinclair. He was attempting to commit suicide after killing Ms Sinclair, whose body was in the next room.
Dr Rod Milton, a forensic psychiatrist who worked on the granny killer task force, also appeared on the show and agreed that Glover was a murderer long before he was 58.
“Behaviour that was central to that kind of killing was well before the age of 58,” he said.
“He could certainly have murdered before then and I think there was a high probability that he did”.
Another four murders committed in Victoria in the decade following 1957 listed Glover high on their list of suspects, but he was never formally charged.
This would double his number of victims and bring his murder tally to a dozen women.
Glover had suggested to police during his time in jail that there were more victims but never gave them enough details to charge him.
He later hung himself in his cell at Lithgow jail in September 2005.
