Paul Thijssen is only depicted a few moments before launching his 'premeditated' and violent attack on Lilie James in a bathroom from the gym.
The 24-year-old hit the Waterpolo coach in the head with a hammer at least 25 times in a bathroom at St Andrew's Cathedral School in Sydney on October 25, 2023.
Mrs James, 21, had finished her casual two -month relationship with Thijssen five days before she was killed in the bathroom.
Before the hair -raising attack, Thijssen was captured to hold a hammer in his left and right hand and to pass how he would put her into an ambush.
CCTV in the school repeatedly showed Thijssen to two different bathrooms – 'Bathroom one and bathroom three' – near the school gym and at three times to rehearse his entry by forcing the door open.
He did that twice with his right hand and on the third opportunity with his left hand – to practice as if he had a hammer in his right side.
In the most calculated of all his movements, just before 5 p.m. and only about two hours before he committed the murder, Thijssen went to the bathrooms with a yellow 'cleaning in execution' board.
This was because by that time Thijssen had chosen the larger, disabled bathroom, called 'bathroom one' as the place where he would kill Mrs. James.

Thijssen sees staring in a CCTV camera in St. Andrew's Cathedral school, only a few moments before he blurred Lilie James with a hammer

Lilie James, 21, suffered extensive injuries during the attack in October 2023
By placing the 'cleaning board' outside 'bathroom three', Mrs. James was forced to use bathroom later that evening.
CCTV images also showed that Thijssen bought a hammer and duct tape from a Mitre 10 -hardware store near the school two days before the murder.
Domestic violence expert Anna Butler told on Wednesday an investigation that patterns of forced control were clear during their short relationship.
When Mrs. James had previously tried to decide with Thijssen, he used offensive, derogatory and gas light language to deny her autonomy.
He escalated his emotionally offensive behavior when he shared an intimate image of her with friends and chasing her after she had expressed doubts about their relationship.
Mrs Butler said he felt growing anger and resentment that he no longer controlled their status, so he used a cache of well -moved manipulative tactics to try to get control back.
Mrs Butler noted that part of the behavior on jealousy and location division in relationships has been normalized that it was an opportunity for his friends to call his increasingly problematic behavior.
Nevertheless, forensic psychologist Katie Seidler noted that Thijssen had no history of aggression and there was probably nothing that could have been done to prevent gender -based violence.

Before the hair -raising attack, Thijssen (depicted) was taken prisoner to hold a hammer in his left and right hand and to demonstrate how he would put her in an ambush
Although the 24-year-old compulsory control in its relationships, she discovered that there were no clear warning signals or indicators of violence to predict the tragic outcome.
Dr. Seidler theoretized that Thijssen killed his 21-year-old ex-girlfriend because he was terrified that it would unravel his façade of perfection.
She believed that he had a fragile feeling of self and saw himself as insufficient and unworthy, so he lied to create a flawless audience image.
Issues of compulsory control and unacceptable behavior in relationships are investigated by the investigation into the death of Mrs James and Thijssen, who died hours after his ex-girlfriend.
Coroner Teresa O'Sullivan assesses whether his death himself was inflicted.
The Esafety Commissioner of Australia, Julie Inman Grant, will provide evidence about the role of technology in relationships, in particular those with young adults.
The investigation will also hear statements from Mrs. James' family, because it will come to an end on Thursday.
More come.