Barron's Thistle A series of grisly unexplained murders has culminated in the dramatic arrest of an eminent local doctor. However, another victim is discovered whilst the doctor is under arrest and the object of the investigation turns to the unsolved murder six years previous of a local man. Chief Superintendent Barron, Northern Constabulary's Head of Operations has become directly involved in the investigation. A man with a secret past in service to Queen and Country, with sinister outside forces exerting influence can Barron battle them and use his formidable skills to help bring those responsible to justice.