What happened to the Saudi sisters?

The mysterious discovery of the Alsehli sisters, who were found dead in a Sydney flat after more than a month, has shocked Australians. But who are they? What were they doing here? And most chillingly - why are they dead? Reporters Rachael Brown and Mahmood Fazal investigate. Please note this story contains disturbing themes including discussions of suicide. Listen for free on your mobile device on the ABC listen app, Apple Podcasts, Google Podcasts, or your favourite podcast app.