Shaun has a painful meeting with his mother Annie; Gary returns to his roots as a reporter; Marcus is devastated by a raid on Massive FM.
Alan Berry's inquiry results are announced; Claire comes clean with her mother; Hilary faces her differences with Lloyd; Shaun's life falls apart.
Shaun tells his wife about his affair with Tina; a newcomer moves in with Claire; Florrie looks forward to the conviction of her son's killer.
Marcus decides to proceed with Massive FM; Claire volunteers as a grief counselor; Hilary has an affair with her security guard.
Bernard is arrested for murder; Shaun contemplates following Werner to Switzerland; Hilary is mugged outside her apartment.
Claire faces life after her sister's death; Gary's double life catches up with him; Werner hires a consultant.
The murder of Sally Friel has a profound impact on the taxi driver who witnessed the crime; Shaun has a panic attack after seeing the news story.
The lives of people in modern-day London crisscross after a random murder takes place on the London Underground.