When young teacher Anna Blackwell is found dead in her home, the police think her death was suicide or a tragic accident. After all, Stonebridge is a quiet country village in the Scottish Borders, where murders just don't happen. But Detective Inspector Jimmy Perez soon arrives from far-away Shetland when his ex-wife, Sarah, asks him to look into the case. The local gossips are saying that her new husband, Tom, was having an affair with Anna. Could Tom have been involved with her death? Sarah refuses to believe it - but needs proof. Anna had been a teacher. She must have loved kids. Would she kill herself knowing there was nobody to look after her daughter? She had seemed happier than ever before she died. And to Perez, this suggests not suicide, but murder.