Mrs Tembe worries about Sid being exploited, but Al sees it as an opportunity for some fun. Zara isn't laughing when she finds something in Joe's school bag that could be a warning. Karen visits an elderly man who thinks his neighbour is looking out for him because she wants his money. Is there any truth in his allegation?

Al disagrees with Jimmi's advice but later has to eat his words. Mrs Tembe comes up with a new way for Sid to use his voice, and Rob tells Heston he is struggling to talk about his feelings. Mrs Tembe tackles an online troll face to face, but can she persuade him to change his negative views about the Mill?