Kris Illingsworth is a former New South Wales detective who later trained with the FBI in behavioral threat assessment. In this episode of Crime Insiders | Detectives, Kris takes Brent Sanders behind the scenes at two of Australia's most notorious crimes...

When a woman is murdered in the remote community of Norfolk Island, everyone on the island becomes a suspect.

And in the sleepy NSW town of Wee Waa, a brutal sexual assault on an elderly woman is solved with the help of criminal profiling.

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A knife-wielding attacker, a city in chaos, and a chase imprinted in the minds of Sydneysiders.

On August 13, 2019, Mert Ney unleashed a brutal stabbing rampage through Sydney’s CBD—murdering Michaela Dunn and terrorising onlookers before being taken down by fearless bystanders wielding chairs and a milk crate.

When police searched Ney, what they found raised even more disturbing questions.

Step inside the courtroom as we uncover the shocking details of the judgement of R v Ney.

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This episode references men's violence against women, suicidal ideation, and violent crime. If you or someone you know needs assistance, contact Lifeline on 13 11 14 or 1800RESPECT on 1800 737 732.

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A group of bikies converged on Sydney airport. Within minutes, one was dead and others injured. It was an incident that set off one of the world's most intense and effective gang operations, and led to a plethora of law changes and high profile convictions.

Deborah Wallace is a titan of NSW Police. Retiring in 2019 after 36 years in the force, she became known across Australia as 'The Gangbuster', after successful operations in the intense region of Cabramatta, and then the aforementioned Strike Force Raptor.

The beginning of her career though was much more abstract. She was involved in one of Australia's most horrific cases. The rape and murder of Anita Cobby in 1986.

Understand the impact of that case on Deb, and Australia as a whole as Brent Sanders steps through the career of one of Australia's most decorated police officers.

If you or anyone you know needs help:

• Lifeline (Crisis support and suicide prevention) 13 11 14
• 1800 Respect (National sexual assault, family and domestic violence counselling line) 1800 737 732
• Men's Referral Service (National counselling, information and referral service for men looking to change their behaviour) 1300 766 491
• Full Stop Australia (National violence and abuse trauma counselling and recovery Service) 1800 385 578

See omnystudio.com/listener for privacy information.