Edinburgh, 1869: Modern-day homicide detective Mallory Atkinson is adjusting to her new life in Victorian Scotland. Her employers know she2s not housemaid Catriona Mitchell, even though Mallory is in Catriona2s body, and Mallory is now officially an undertaker2s assistant. Dr. Duncan Gray moonlights as a medical examiner, and their latest case hits close to home. Men are dropping dead from a powerful poison, and all signs point to the grieving widows5 the latest of which is Gray2s oldest sister. Poison is said to be a woman2s weapon, though Mallory has to wonder if it2s as simple as that. But she must tread carefully. Every move the household makes is being watched, and who knows where the investigation will lead.