Classic 1980’s BAFTA-winning BBC drama, available on Blu-ray for the very first time! As Yorkshire detective Ronald Craven investigates the murder of his daughter, the story spirals into a gripping eco-thriller of political conspiracy, secret service machinations and even shady medieval societies. As he draws closer to the dangerous inner sanctums of organised environmental protests and nuclear power interests, he discovers the ultimate truths at the heart of our society.