This week, Mel takes Josie through the murder of 15-year-old friends Marianne Schmidt and Christine Sharrock at Sydney's Wanda Beach, a case which has remained unsolved for 53 years.

Love All Aussie Mystery Hour? Follow us on all forms of social media!

Instagram: @allaussiemysteryhour

Twitter: @mystery_hour

Facebook: Search for the All Aussie Mystery Hour group.

Josie on Instagram: @josieroze

Mel on Instagram: @melissamason_

See omnystudio.com/listener for privacy information.