When Superintendent Tom Harper's wife is threatened during an election campaign, the hunt for the attacker turns personal. Leeds, England. October, 1897. Superintendent Harper is proud of his wife Annabelle. She's one of seven women selected to stand for election as a Poor Law Guardian. But even as the campaign begins, Annabelle and the other female candidates start to receive anonymous letters from someone who believes a woman's place lies firmly in the home. The threats escalate into outright violence when an explosion rips through the church hall where Annabelle is due to hold a meeting - with fatal consequences. The only piece of evidence Harper has is a scrap of paper left at the scene containing a fragment from an old folk song. But what is its significance? As polling day approaches and the attacks increase in menace and intensity, Harper knows he's in a race against time to uncover the culprit before more deaths follow. With the lives of his wife and daughter at risk, the political becomes cruelly personal .