Harriet is distraught to discover son Gavin has been attacked in prison, and discovers the only way to protect him is to supply the bully with drugs - but even if she could get hold of some, how would she smuggle them in? Gemma realises Steve is still keeping secrets from her, homeless Francesca is forced to reach out to her estranged father, while Lou worries when the school teachers inform social services about her son's behaviour. Pippa Haywood and Adam Gillen star.