Last year a man was arrested in Italy, charged over the murders of Suzanne Armstrong and Susan Bartlett in Melbourne, almost 50 years ago. Tomorrow the path to his potential trial begins in a Melbourne Magistrates Court.

In this episode, ABC Reporter Alexandra Alvaro joins Stephen Stockwell to explain what we know about the crime, what this committal hearing is and who the key players are.

If you have any questions you'd like Alex or Stocky to answer in future episodes, please email thecaseof@abc.net.au.

The Case Of is the follow-up to the hit podcast Mushroom Case Daily, and all episodes of that show will remain available in the back catalogue of The Case Of.