For months Australia was the envy of the world, with COVID-19 largely under control. All that changed when the news broke of a breach in Melbourne’s hotel quarantine program. On Monday Four Corners investigates how COVID-19 escaped back out into the Victorian community, wreaking havoc in the state and putting the rest of the nation in peril. After the initial outbreak, the virus spread with alarming speed and took hold in the most vulnerable places imaginable, aged care homes. This investigation reveals the failures by the authorities that were supposed to keep the community safe.