Sonia's trial is underway, and Liz is brought in as the prosecution's star witness. Sonia has a surprise accomplice. Lucy spies Liz in her civvies and immediately suspects something is awry. The defense tears Liz's evidence apart. Meanwhile, Franky and Bridget's relationship implodes as Franky insists on Ferguson's involvement in her murder charge. Then, a surprise letter changes everything.
A nervous Liz prepares for her imminent appearance as Witness X, living in fear that Sonia will surely catch her. Someone discovers Liz's secret; but are they a friend or a foe? Elsewhere, Vera undermines Ferguson's "self-defense" plea in Bea Smith's slaying.
On the inside, Vera and Ferguson must deal with the fallout from Bea's death; while outside, Franky's life of freedom is jeopardized by an obsessive Mike Pennisi. Recovering from Bea's death, Allie returns to Wentworth seeking vengeance against Ferguson.