When the gates of Wentworth Correctional Centre open on the final season, three weeks have passed since the shivving of Allie. With Allie's attacker still at large, no one, least of all the H1 family, realise that they have a terrorist and would-be murderer, Judy Bryant, in their midst.

Boomer faces a crisis of courage when she takes on Lou for top dog and Judy convinces Allie to help with her bid for extradition.