In September 2016, police swarmed on a home on Mactan Island in the Philippines as part of an international investigation into child sexual exploitation material.
A raft of images featuring young Filipino children had been uncovered the previous November during a raid on a property in Queensland.
After 10 months of painstaking work, Australian Federal Police and Philippine National Police investigators had managed to identify the victims and trace them to the Cordova home. Six children were taken into protective custody and their mother was arrested.
Watch: Keeping your kids safe on social media.
The woman, who was later sentenced to 20 years in prison by a Philippine court, had taken more than $25,000 from a Sydney-based offender in exchange for personalised child abuse material featuring two of her children. The youngest was just two years old when the abuse began.
The man later received an 11-year jail term.
That September day on Mactan Island, AFP Senior Constable Nicole Whelan was there as the mother was taken into custody.
"That was, 100 per cent, one of the highlights of my career," Snr Cst. Whelan told Mamamia.