Without the internet, police were unable to track offender behaviour, and heavily relied on victim survivor testimony. 

These interviews were crucial, and required care and empathy, as one misstep, and evidence could be lost and a victim survivor left unheard. 

Former detective Andrew Patterson was part of a special task force investigating paedophiles in Perth, and was the one who spoke to hundreds of victim survivors.. One morning, he received information about a sexual predator, and descriptions of an underground chamber with shiny chrome walls. He and his team set about investigating the offender, and finding survivors.

He sat down with host Brent Sanders to explain this case, and others from his career. 

This content contains references to child sexual abuse, if this content affects you, the number for Life Line is 13 11 14. 

See omnystudio.com/listener for privacy information.