Dorrough is being interviewed by police in Western Australia, who warn him: 'Anything you say or do will be electronically recorded and may later be used as evidence.' Dorrough doesn't answer, so what is he hiding? Soon after, Dorrough sought salvation by joining the Jehovah's Witnesses. What is the connection between these events and his subsequent decision to take his own life?

Following his suicide, Dorrough leaves a confession to the murder of three people, but doesn't name them. In a remote community on the Dampier Peninsula, Kate meets Indigenous elder Irene Davey, whose daughter Sara-Lee went missing in Broome on January 14, 1997. That same night, Dorrough is also in Broome, his Navy ship is moored at the jetty. After a night out, he tries bringing Sara-Lee back to his ship. She is never seen again.

In Sydney, the body of Rachael Campbell is discovered, lying in a church carpark. The young Maori woman had migrated to Australia from New Zealand as child and had fallen into addiction before being murdered. At the time, Dorrough is in Sydney. His Kombi van is parked near where Rachael’s body is found, but no one is arrested over the killing. Soon after, Dorrough moves to Queensland.

In Bundaberg, QLD, Dorrough runs a man over but serves only a year in jail after a psychiatrist says he has no history of violence. As Kate and Dan dig deeper into the case, the same psychiatrist now questions his assessment, saying Dorrough may have had multiple personality disorder linked to the sexual abuse he suffered as a child. Does the diagnosis help explain any of Dorrough’s behaviour? Does it excuse it? After his release from prison, Dorrough is on the move again.

Ten years after Dorrough was jailed in Queensland, the police in Sydney get a breakthrough, matching his DNA to that found on Rachael Campbell's body. Retracing the investigation, Kate and Dan discover other cases where women have been murdered or gone missing and also remain unsolved. They question whether who you are or how you live affects your chances of getting justice in Australia.

NSW Police Force Detective Tamer Kilani describes visiting Dorrough in prison following his arrest over the murder of Rachael. What he found there disturbs him. Tamer, whose job is to re-investigate cold cases, also discovers Dorrough’s teeth are consistent with a bitemark found on Rachael’s body. When the trial starts in 2010, Tamer thinks they’ll win it. Kate and Dan investigate what happened, and why the judge says he would have come to a different decision to the jury.

After months of trying to contact her without success, Kate finally meets Dorrough’s fiancee - the woman who received his confession following his suicide. She talks about their life together, describing Dorrough as 'a great father', but slowly opens up about his darker habits, including how he started to tell her things she didn't understand, like how to dispose of bodies....

Kate and Dan make a final effort to identify Dorrough's third, unidentified, victim. What they learn forces them to look again at the way they’ve told this story. They go back to the beginning and, in this telling, Dorrough's story is more normal and at the same time, much more troubling. Dan accepts that he can never see the world in the same way again.