In 1980, nine-week-old Azaria Chamberlain disappeared from a campsite at Airs Rock. Her mother claims a dingo had taken her. Two years later, the question of what happened was tested in court. Told through the witnesses and evidence presented at trial, this episode follows how the infamous case unfolded before a jury.

On a Monday morning in December 2014, customers sit down for coffee in Martin Place. Minutes later, a shotgun is produced and the doors are locked. For the next seventeen hours, a group of hostages move when instructed, speak when permitted, and wait while police negotiate from outside. As hours pass and daylight fades, the siege narrows toward a final break.

Sydney, December 1988. Twenty-seven-year-old American mathematician Scott Johnson is found dead at the base of cliffs at North Head. He had moved to Australia to build a life with his partner, splitting his time between Canberra and Sydney while completing his PhD. His clothes are discovered folded near the cliff edge, and within months his death is ruled a suicide — but over the decades that follow, questions about that conclusion refuse to settle.

Sydney, July 1960. Eight-year-old Graeme Thorne disappears while waiting for a lift to school in Bondi. His family are ordinary — a travelling salesman, his wife, and their two children, living in a rented duplex. Three weeks earlier, however, Bazil Thorne had won £100,000 in the Opera House Lottery — and the media published their names and home address.

Police have unearthed a total of seven bodies when they conclude their search at Belanglo State Forest. Attention now turns away from the forest and toward finding who is responsible. Thanks to Paul Onions, a survivor of an earlier attack in the same forest, Task Force Air gets its breakthrough. On the 5th of May 1994, police fly Paul to Australia and show him a series of images. He identifies the man he says attacked him. His name is Ivan Milat.

Police have just uncovered a fifth body in Belanglo State Forest. The victims span years of disappearances but a pattern is appearing; they all vanished while hitchhiking along the hume highway. Task Force Air has been formed to coordinate the investigation, bringing together missing-persons cases, forensic evidence, and search operations. What remains unclear is whether the forest has revealed everything it contains.

For decades, the road between Sydney and Melbourne has been a trusted passage — a route taken by families, freight drivers, and young travellers chasing work or experience. In the late 1980s, hitchhiking along this corridor is common and unremarkable. But when multiple travellers vanish without witnesses, a forest just off the highway begins to emerge as something more than a place on the map.

In Kings Cross during the summer of 1975, the Savoy Hotel is one of many old boarding houses offering cheap beds to those with nowhere else to go. But on Christmas morning, neighbours look up to see residents trapped behind windows and smoke pouring from the stairwell. What first appears to be a tragic accident will soon expose a far darker origin.