A woman begins a campaign of revenge that backfires when her husband catches her, forcing her to deny an affair. Her best friend is attacked on her way home from a night out.

Wracked with guilt over her friend's attack, a woman sets about convincing the police it was her brother's killer, but quickly discovers he's been eliminated from their enquiries.

Cathy and Raymie are devastated to learn of Sally's murder and Michael is arrested and taken in for questioning. Lena quizzes son Andrew about where he was the night before and divulges to her dad that she fears Andrew could be involved.