Queensland in the 1950s: god-fearing, morally upstanding, tough on crime.Beneath the surface, a murky world of gambling, drugs and brothels kept in check by three crooked cops known as The Rat Pack.

For thirty years, they ran a complex system of bribery and extortion as they pocketed the profits. But this trio never dreamed how things would end. That the women they exploited — madams, sex workers, entrepreneurs — would be their demise.

Journalist Matt Condon weaves a David and Goliath story with never-before-heard tapes from his decade of reporting on Queensland's police corruption.

Sirens are Coming is the newest season of the ABC's history podcast, Dig. Search for Dig: Sirens Are Coming to listen to the full series now.