This week's program concludes the astonishing family crime saga behind the disappearance of Melbourne teenager Prue Bird.

Her mother Jenny had long suspected Prue's abduction might be payback for family connections that link back to the notorious Russell Street police bombing.

But Melbourne police failed to get a break on the case and Prue's disappearance lingered for years in the missing persons files.

A last ditch effort by Jenny Bird led to a reward being offered and a sensational confession from an unexpected quarter.

In this compelling conclusion, the schism in Jenny Bird's family is laid bare. There are new answers but profoundly disturbing questions remain...