On the streets of Adelaide just after the turn of the millennium, Steve Williams was an imposing figure - both in stature and reputation. He was the boss of the Gypsy Jokers at a time when gangs ran rampant.

He was seemingly untouchable, a self-appointed spokesman for the underworld, he regularly walked the halls of parliament and bent the ears of politicians.

And then he vanished. Taken from the carpark of his favourite pub, what happened that day remains a mystery.

Williams’ daughter Blayze has been searching for answers for 15 years. But now she thinks she knows what happened.

Story by Hannah Foord

Produced by Ali Aitken

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