Having brought the Brisbane serial killer investigation to a close, FBI Agent Natasha Quinn found herself stationed in Australia. Seeking a shift in her professional landscape, she formally requested a transfer to the FBI's Canberra headquarters. Unbeknownst to Agent Quinn, this decision would lead her into not one, but three compelling investigations deep within the rugged Australian outback of Queensland. Her initial assignment in Queensland's remote reaches took her to Muralsby, where she reunited with Billy Murray, a familiar face from the Brisbane investigation. Following this successful collaboration, Quinn was dispatched to Salvation Creek, another isolated outback settlement, to tackle a separate case. There, she joined forces with Senior Constable David "Dave" Barlow. After concluding her work in Salvation Creek, Quinn briefly returned to the United States for a much-needed respite. Upon her return to active duty in Australia, she received an urgent summons to Wattle Creek, once again in the vast Queensland outback, for yet another challenging investigation. Where she teams up with both Billy Murray and Dave Barlow.