Suddenly everyone's mad about Hunky Parker. People are desperate to buy disgusting Hunky T-shirts, trainers like pigs trotters, and pig-swill yoghurt. But Dinah hates it all. And when she and her friends try to investigate, they walk straight into the middle of a fiendish plot and a race against time. Can they stop the Demon Headmaster before it's too late? This is the third title in the best-selling series which inspired the top-rating TV series.