02 What Became of Jack? | The breakup

07 What Became of Jack? | Two cars

A new theory emerges from tip-offs coming in to ABC journalist Rob Burgin. Rob investigates two cars spotted at Ficks Crossing the night Jack McLennan disappeared, hoping it might lead him to an understanding of what became of Jack.

06 What Became of Jack? | Duke Speaks

The last known person to see Jack alive finally breaks his silence. Chris Duke speaks in detail for the first time, laying out his version of what happened the night Jack McLennan vanished and revealing new details about Jack's last known moments.

05 What Became of Jack? | Whispers

Jack’s mum gets a shocking tip-off from a scared community member. With the rumour mill in overdrive, ABC journalist Rob Burgin tries to decipher what’s true and what’s not about the disappearance of Jack McLennan.

04 What Became of Jack? | The Wondai house

One of the last places Jack was seen was a house in Wondai. Rob goes there, despite being told the people inside that night have links to the region's darker side, to investigate why Jack visited that night and what happened after he left.

03 What Became of Jack? | The dark side

Rob retraces Jack's final hours via CCTV footage and meeting people who saw him in his last days. He also learns about another item found in Jack's wallet that reveals a different side to what went on that night. And finally, ABC journalist Rob Burgin gets a call through to the last known person to see Jack alive, and he agrees to speak publicly for the first time.