They thought that they had all the power, until she took it from them. A killer hunts abusive spouses, blogging about their sins post-kill. Soon the murders and the brazen journaling draws the attention of Police Scotland's CID. This killer works with surgical preparation, precision and skill, using a unique weapon of her own and never leaves a trace of evidence behind. Edinburgh's DI Kathy McGuire, nearing the end of her career, begins the hunt for the murderer as a media frenzy erupts. But McGuire might have met her match...What has led this killer to take the law into her own hands? Is the woman accountable really a cold-hearted killer or a desperate vigilante?