The Whiskey Au Go Go firebombing is one of the most notorious crimes in Queensland history.
Fifteen people died in that blaze, exposing a murky underworld web of violence and corruption.
Tangled up in that web was Barbara McCulkin, the wife of a Brisbane gangster, the woman who knew too much.
Less than a year after the bombing, Barbara and her two daughters disappeared, never to be seen again.
It turns out all three were murdered to protect the guilty.
This Sunday, Steve Pennells reports that justice for the McCulkins has been a long time coming.
Sunday Night airs Sunday 8.30pm only on Channel 7.