A BBC journalist investigates how the lives of children on a Huddersfield housing estate are scarred by county lines drug gangs. Knife attacks, even shootings, are unremarkable for these children, who are groomed to carry drugs and threatened with violence if they try to leave. But there is a positive side, with huge support coming from families, the community and, at the centre, a school whose staff do everything possible to help these vulnerable children have normal lives.