A building inspector arrives at Wentworth to inspect the rebuilding, but he's a fake. Once inside the jail, he knocks Colleen out, ties her up, and plants bombs around the prison. Meg rescues Colleen, but the women have been locked in the laundry with a bomb inside ticking away... Sharon is charged with murder as Alpha Centauri's true nature is exposed in the press, shattering her illusions. Helen decides to implicate herself to help her sister. Lizzie gets wind of Petra and Scott's relationship but vows to keep quiet. Petra tells Lizzie her father abused her, and was going to do the same to her sister, Emma, which is why she killed him. Later, when Emma visits Petra, we learn it was actually Emma who killed him. Lucy attacks Major the dog to stop him finding her drugs, and a furious Joan turfs her out. Ann forgives Wally. Lizzie gets a telegram from Foxy.