It is one of Australia's most enduring crime mysteries. Now police have made an arrest over the murders of Suzanne Armstrong and Susan Bartlett.Andrew Rule examines how police investigators reopened this very cold case. Subscribe to Crime X+ to hear episodes early and ad free, unlock bonus content and access our slate of award-winning true crime podcasts Have a question for one of our Q+A shows? ask it at: [email protected] Like the show? Get more at https://heraldsun.com.au/andrewruleAdvertising enquiries: [email protected] Crimestoppers: https://crimestoppers.com.au/ If you or anyone you know needs help Lifeline: 13 11 14 Beyond Blue: 1300 22 4636 Kids Helpline: 1800 55 1800 See omnystudio.com/listener for privacy information.