Growing up, we tuned into TV for light entertainment — a bit of fun after school, or harmless Saturday evening drama. Here are five TV shows that got unexpectedly dark — and scarred us in the process:5. Grange HillThe vibe: A school drama, aimed at kids and teens, with the usual classroom banter and playground antics. The darkness: Worzel could remove and swap his own head — which, let’s be honest, was already nightmare fuel. Lasting trauma: Thousands of people tuned in expecting a slightly scary drama and got the most harrowing two hours of TV ever made.