The true story ofia modern military witch-hunt andia culture of brutal intolerance. Helen Baxendale stars as Caroline Meagher, who in the 1980s was an up-and-coming staff sergeant in the Royal Military Police. Caroline eagerly accepts a plum assignment with the Special Investigative Branch. But her task - to root out and interrogate suspected lesbians - becomes a nightmare as she gradually awakens to the truth about her own heart's desire. Based on a true story, this stirring drama tells a shocking tale of intolerance, of private lives invaded and careers destroyed - all carried out in the name of justice when the only crime is love.