Audrey, Nick and Gail are horrified when they see posters of Clayton dotted around the Street and wonder if this was David's doing. The police turn up at Number 8 and arrest David on suspicion of perverting the course of justice, but David denies all knowledge. Later, the police reveal that Macca has sustained a serious head injury and that they suspect David is responsible. What will David say and can he think of a reasonable alibi? Also tonight, Eileen FINALLY starts to realise all may not be as it seems with Phelan and Vinny.